RESUMEN

Purpose of the study: Tissue reconstruction after burns, tumor excisions, infections or injuries is a frequent surgical challenge to avoid Ischemia-reperfusion injury. Lazaroids and sildenafil, through their mechanisms of action, have been studied for their protective effects on various organs subjected to IRI. In this study, we aimed to evaluate the therapeutic potential of U-74389G and sildenafil in a swine model of ischemia and reperfusion injury of latissimus dorsi flap. Materials and methods: Forty-two Landrace male pigs, weighing 28-35 kg, were equally (n = 6) randomized into the following groups: (a) Group I: control, (b) Group II: administration of U-74389G after ischemia, (c) Group III: administration of sildenafil after ischemia, (d) Group IV: administration of U-74389G and sildenafil after ischemia, (e) Group V: administration of U-74389G prior to ischemia, (f) Group VI: administration of sildenafil prior to ischemia, and (g) Group VII: administration of U-74389G and sildenafil prior to ischemia. Blood and tissue sampling was conducted before ischemia, 15 and 30 min after occlusion, 30, 60, 90, and 120 min after reperfusion. Results: Statistically significant reduction (p < 0.05) was detected in lymphocytes and polymorphonuclear leukocytes concentrations as well as in the appearance of edema after histopathologic evaluation of the ischemic tissue, especially in the groups of combined treatment. Measurements of malondialdeyde and tumour necrosis factor alpha in tissues revealed a significant decrease (p < 0.001) of these markers in the treatment groups when compared to the control, particularly in the latest estimated timepoints. Conclusions: The synergistic action of U-74389G and sildenafil seems protective and promising in cases of flap IRI during tissue reconstruction surgery.

Asunto(s)

Antioxidantes/farmacología , Pregnatrienos/farmacología , Daño por Reperfusión/prevención & control , Citrato de Sildenafil/farmacología , Colgajos Quirúrgicos/irrigación sanguínea , Animales , Antioxidantes/uso terapéutico , Modelos Animales de Enfermedad , Sinergismo Farmacológico , Humanos , Masculino , Malondialdehído/metabolismo , Estrés Oxidativo/efectos de los fármacos , Pregnatrienos/uso terapéutico , Daño por Reperfusión/patología , Citrato de Sildenafil/uso terapéutico , Músculos Superficiales de la Espalda/irrigación sanguínea , Músculos Superficiales de la Espalda/patología , Músculos Superficiales de la Espalda/trasplante , Colgajos Quirúrgicos/patología , Colgajos Quirúrgicos/trasplante , Porcinos , Factor de Necrosis Tumoral alfa/metabolismo

RESUMEN

BACKGROUND: Several studies have been conducted evaluating psychological effects following aesthetic surgery, however few of them following blepharoplasty! PURPOSE: To determine whether blepharoplasty affects quality of life and satisfaction as well as, emotional stability and self-esteem in patients who underwent only blepharoplasty. DESIGN: A retrospective study including transdermal blepharoplasty operations between the years 1995 and 2008. METHODS: A self-developed and indication-specific questionnaire especially for blepharoplasty, as well as the standardized testing instruments FLZM, FPI-R, and RSES, concerning quality of life, body image, personality, and self-esteem was utilized. PARTICIPANTS: A total of 123 patients were included in the study. Forty-six patients participated in the study. MAIN OUTCOMES AND MEASURES: Results were compared with the existing representative norm data from the German speaking countries. RESULTS: In the indication-specific questionnaire, 44 patients reported a positive influence on their personal wellbeing, and 33 were more satisfied with their appearance (follow-up 3-95 months; average 48.5 months); 20 felt more self-confident, and 25 felt more attractive.Statistically significant increased values in quality of life (FLZM) were found in the aspects work (P = 0.02), mobility (P < 0.001) and independence from assistance or help (P < 0.001).Higher scores concerning personality and self-esteem compared with the respective random sample were found in the questionnaires FPI-R (P = 0.02) and RSES (P < 0.001). CONCLUSION AND RELEVANCE: Among plastic surgical interventions, blepharoplasty is a minimal invasive operation, which is very well tolerated by patients. Patients take advantage in personal wellbeing, self-esteem, and different aspects of their daily life.

Asunto(s)

Blefaroplastia/psicología , Técnicas Cosméticas/psicología , Satisfacción del Paciente , Calidad de Vida , Adulto , Anciano , Blefaroplastia/métodos , Imagen Corporal/psicología , Emociones , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Personalidad , Estudios Retrospectivos , Autoeficacia , Encuestas y Cuestionarios

RESUMEN

INTRODUCTION: Medial canthus is a common area of skin cancer prevalence. Defects in this region represent a challenging reconstructive task. The nasal version of keystone perforator island flap (KPIF) has proven its versatility. The aim of the present study was to expand its utilization in the neighbor medial canthus area. A modified croissant-like KPIF (CKPIF) was used resolving inner convexity-related problems. The presence of procerus in the glabella area, bridging a surface from nasalis up to the frontalis, changed the traditional dissecting flap technique. Thus, the authors introduce the bridge principle, which consists of the indirect transfer of the flap to the defect site through a muscular "bridge" (the procerus). The authors report their experience in medial canthal reconstruction combining a modified KPIF with a new dissecting "principle." METHODS: From November 2016 to July 2017, a series of patients presenting soft tissue defects of various dimensions in the medial canthus, secondary to tumor extirpation, sustained reconstruction with a CKPIF dissected with the bridge principle. RESULTS: A total of 15 patients were treated with this new technique. Their mean age was 75.3 years. The mean size of the defect was 2.08 cm (length) × 1.5 cm (width). All flaps survived without any sign of venous congestion. A transient epiphora presented in 4 patients (4/15 or 26.6%), which was subsided 2 months later. CONCLUSION: A new approach following a novel paradigm was introduced to resolve an old problem. Initial outcomes are encouraging. However, longer series are needed to extract definitive and safer conclusion.

Asunto(s)

Neoplasias del Ojo/cirugía , Enfermedades del Aparato Lagrimal/cirugía , Aparato Lagrimal/cirugía , Colgajo Perforante/cirugía , Procedimientos de Cirugía Plástica/métodos , Colgajos Quirúrgicos/cirugía , Anciano , Femenino , Humanos , Masculino , Evaluación de Procesos y Resultados en Atención de Salud , Complicaciones Posoperatorias/etiología

RESUMEN

Autologous fat is considered the ideal material for soft-tissue augmentation in plastic and reconstructive surgery. The primary drawback of autologous fat grafting is the high resorption rate. The isolation of mesenchymal stem cells from adipose tissue inevitably led to research focusing on the study of combined transplantation of autologous fat and adipose derived stem cells (ADSCs) and introduced the theory of 'cell-assisted lipotransfer'. Transplantation of ADSCs is a promising strategy, due to the high proliferative capacity of stem cells, their potential to induce paracrine signalling and ability to differentiate into adipocytes and vascular cells. The current study examined the literature for clinical and experimental studies on cell-assisted lipotransfer to assess the efficacy of this novel technique when compared with traditional fat grafting. A total of 30 studies were included in the present review. The current study demonstrates that cell-assisted lipotransfer has improved efficacy compared with conventional fat grafting. Despite relatively positive outcomes, further investigation is required to establish a consensus in cell-assisted lipotransfer.

RESUMEN

INTRODUCTION: The ala is a unique landmark of the nose disposing aesthetic and functional properties. The head and neck area is the main site of appearance of nonmelanoma skin cancer. One third of them are located in the nose with an alar preponderance compared with other nasal subunits. Correction of alar defects is a challenging reconstructive task. The keystone perforator island flap (KPIF) was introduced as an alternative in nasal reconstruction by senior authors. In the present case series, KPIFs' application is introduced into the alar subunit as an alternative, versatile, and reproducible reconstructive option, even for the novice plastic surgeon. MATERIALS AND METHODS: From April 2014 to September 2015, patients presenting with partial thickness alar defects (≤1.5 cm) secondary to tumor extirpation sustained reconstruction with different types of KPIF. RESULTS: A total of 31 patients (mean age of 72 years) were treated with various types of KPIF. The mean diameter of the defect was 1.14 cm. The vast majority of reconstructions concerned a type IV KPIF (18/31 or 58.1%). Sometimes an upward alar retraction was noted. A minimal rim wedge excision was performed (≤0.3 mm) using counterbalancing correcting sutures. All flaps survived without any sign of venous congestion, whereas the rim healed uneventfully. The mean follow-up period was 6.5 months. CONCLUSIONS: KPIF was introduced as a single-stage alternative reconstructive option for partial thickness alar defects, completing author's experience with this flap into such a challenging and aesthetically critical anatomic area.

Asunto(s)

Cartílagos Nasales/cirugía , Deformidades Adquiridas Nasales/cirugía , Neoplasias Nasales/complicaciones , Colgajo Perforante , Rinoplastia/métodos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Cartílagos Nasales/diagnóstico por imagen , Deformidades Adquiridas Nasales/diagnóstico , Deformidades Adquiridas Nasales/etiología , Neoplasias Nasales/diagnóstico , Neoplasias Nasales/cirugía , Índice de Severidad de la Enfermedad , Adulto Joven

RESUMEN

BACKGROUND: The proper digital arteries as any other axial vessel give rise to multiple cutaneous perforators either volar or dorsal along their course. Their identification is performed with Doppler flowmetry. The vasculo-cutano-tendino-osseous complex (VCTOC), which was described by the senior authors, was responsible for the vascularization of all digital anatomic structures (extensor apparatus, skin, periosteum). Their consistent appearance to well measured distances from the digital joints led the way to the present clinical study for highlighting this described anatomy in-vivo and demonstrating the predictability in digital artery perforator (DAP) flap harvest. METHODS: From November 2012 to March 2014, fifteen patients underwent reconstruction with a predictable pattern digital artery perforator flap (PPDAP), based on the previously described VCTOC mapping, for digital lesions secondary to tumor extirpation. Flaps were designed as V-Y advancement or propeller type. Postoperative control concerned flap viability and digital function. RESULTS: Seven males and 8 females underwent elective surgery using PPDAP flaps for digital defects following tumor extirpation. The diameter of the defect ranged from 0.5 to 1.5 cm. The vast majority of the lesions were identified on the right hand, the index, the ring finger and the distal phalanx. All flaps survived without signs of venous congestion. No functional digital problems were observed during follow up (mean of 77 months). A minor wound dehiscence presented in one patient. CONCLUSIONS: Authors introduced the concept of a "predictable pattern" in the surgery of perforator flaps in the digits. These flaps are reliable and could be a valuable reconstructive option.

RESUMEN

Background This experimental study investigates the use of vascularized fascia as carrier for prelaminated cartilage and bone flaps. Methods A total of 30 male New Zealand white rabbits were divided into two equal groups (A and B). The fascia surrounding the inguinal fat and superficial inferior epigastric vessels was dissected. In group A, the fascia was wrapped around a template (20 × 40 mm) of cartilage harvested from the rabbit's ear. In group B, the fascia was wrapped around a 15 × 35 mm piece of rib cortical bone. After a maturation period of 4 weeks, group A was subdivided into three groups (A1, A2, and A3). In group A1 (six animals) the animals were sacrificed and the flaps were sent for histological examination, in A2 (six animals) the flaps were rotated 180 degrees and anchored at knee level, and in A3 (two animals) the flaps were transferred as free flaps to the right SIE (superficial inferior epigastric vessels). The animals of subgroups A2 and A3 were sacrificed after another maturation period of 2 weeks and the flaps were sent for histological examination. After a maturation period of 6 weeks, group B was subdivided into three subgroups (B1, B2, and B3) corresponding to the cartilage subgroups. Subgroups B2 and B3 were sacrificed after 2 weeks. Results All flaps of groups A and B demonstrated good viability apart from one specimen of subgroup B2. Angiogenesis was present in all groups. Conclusion Meticulously dissected vascularized fascia can be successfully used for prelamination of complex fasciocartilaginous or osseofascial flaps. The required maturation periods are 4 and 6 weeks, respectively.

Asunto(s)

Fascia/patología , Procedimientos de Cirugía Plástica , Colgajos Quirúrgicos/irrigación sanguínea , Animales , Supervivencia de Injerto , Masculino , Conejos , Cicatrización de Heridas

RESUMEN

INTRODUCTION: Perforator flaps whether in a free or pedicled form are essential in leg reconstruction, requiring meticulous dissection based on a detailed understanding of vascular topographic anatomy. Numerous investigators have addressed this issue. However, the directionality of their fascial exit has not been greatly discussed in the literature. Subfascial course of the perforating vessel is a crucial determinant for optimal perforator selection especially when the propeller perforator flap option is considered, because an angulated fascial penetration would eventually result in perforator kinking which would additionally compromise vascular patency. The aim of the current study was to investigate the vascular anatomy of posterior tibial artery evaluating a wide range of parameters, including perforators' subfascial directionality, to precisely determine constant reliable perforator sites, in relation to surface landmarks on the medial aspect of the lower leg. MATERIAL AND METHODS: Dissections in 30 lower legs from 25 fresh cadavers were performed. The lower leg was divided into 3 equal vascular zones. Measurements were taken in reference to anatomical landmarks. Perforator clusters to 5-cm intervals from medial malleolus were recorded and analyzed. Vessels with external diameter less than 0.5 mm were excluded. Data regarding the number, distribution, type, external diameter, length from posterior tibial artery, distance, and subfascial directionality were collected and treated. RESULTS: A total of 155 perforators were identified (average number, 5 per leg; average diameter, 1.0 mm). Septocutaneous (127/155) perforators predominated, followed by musculocutaneous (19/155) and septomusculocutaneous (9/155). Most was concentrated in the middle (73/155) and distal (64/155) tertile. There were no septomusculocutaneous perforators at the distal third of the leg, whereas septocutaneous perforators were encountered into all vascular tertiles. An average of 2 comitant veins accompanied each perforator. Length and diameter related to the perforators' location. There was a significant association between perforator length and type. Cluster analysis revealed that reliable perforators were identified within the 21 to 25, 26 to 30, and 16 to 20 cm intervals. CONCLUSIONS: Clinically optimal perforators for the first time were precisely located in relation to subfascial directionality, vascular diameter, and length from the source artery. Continuous improving details of vascular anatomy will further evolve perforator flaps' applications.

Asunto(s)

Pierna/irrigación sanguínea , Colgajo Perforante/irrigación sanguínea , Arterias Tibiales/anatomía & histología , Adulto , Anciano , Fascia/irrigación sanguínea , Femenino , Humanos , Masculino , Persona de Mediana Edad

RESUMEN

Low-molecular-weight antioxidants are some of the most efficient agents of the skin defense mechanism against environmental factors, such as cosmic rays, smoke, and pollutants. The total skin concentrations of hydrophilic ascorbic and uric acids, as well as lipophilic α-tocopherol, ß-carotene, and ubiquinol-10 antioxidants were determined by an HPLC-EC detector from 18 biopsies of human nonmelanoma skin carcinomas and 18 biopsies from skin areas adjacent to carcinomas. No significant differences in the concentrations of lipophilic antioxidants in both carcinomas and normal-looking skin areas adjacent to carcinomas were observed. On the contrary, ascorbic and uric acid concentrations were found to be 18 and 36% lower in carcinomas than in normal-looking skin areas, respectively. No statistical significance was observed between antioxidant concentrations and age, sex, phototype, profession, site of tumor, frequency, and time of UV light exposure either. Accordingly the antioxidant concentrations in both cancerous skin and adjacent normal-looking areas were found to be much higher than in normal skin, in contrast to literature data.

Asunto(s)

Ácido Ascórbico/metabolismo , Neoplasias Cutáneas/metabolismo , Piel/metabolismo , Ubiquinona/análogos & derivados , Ácido Úrico/metabolismo , alfa-Tocoferol/metabolismo , beta Caroteno/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Antioxidantes/química , Antioxidantes/metabolismo , Ácido Ascórbico/química , Carcinoma Basocelular/metabolismo , Carcinoma de Células Escamosas/metabolismo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Peso Molecular , Ubiquinona/química , Ubiquinona/metabolismo , Ácido Úrico/química , alfa-Tocoferol/química , beta Caroteno/química

RESUMEN

Frequent localization of facial malignancies in the nasal area and their required complete surgical extirpation pose a significant challenge to the plastic surgeon, who is called to perform a suitable delicate reconstruction of produced nasal skin defects. The present study was aimed to examine the role of tumor characteristics in the prognosis of patients with nasal skin cancer undergoing surgical management.A retrospective review of 1795 patients operated on for nasal cutaneous neoplasms during a 26-year period is presented in our study. Descriptive statistics were appropriately calculated; multivariate Cox regression analysis was performed regarding the possible risk factors for recurrence. Only those with a complete follow-up were included in the study. The mean age of our study population was 66.7 years with a male majority (52.4%). Basal cell carcinoma appeared as the most common histological type (87.7%), followed by squamous cell carcinoma (7.9%); the latter correlated with poor prognosis.The nasal sidewalls were the most frequent lesion location (29.8%), followed by the alae (27.8%), dorsum (21.7%), and tip (19.3%). The columella was very rarely affected (0.5%) but was associated with increased recurrence [hazard ratio, 4.74; 95% confidence interval (CI), 1.12-20.00; P = 0.034]. Most patients were treated with elliptical excision and direct closure (58.7%). Local flaps (31.0%) and skin grafting (9.0%) proved very reliable surgical options, especially for larger, high-risk lesions. Recurrence transpired in 46 patients (2.6%) and 4 skin cancer-related deaths occurred.Surgical modality of choice should be individualized and carefully adjusted to patients' needs. Moreover, more elective techniques, such as Mohs micrographic surgery or cumulative therapeutic approaches, like irradiation, should be examined as a beneficial aid to confront high-risk malignancies.

Asunto(s)

Carcinoma Basocelular/cirugía , Carcinoma de Células Escamosas/cirugía , Melanoma/cirugía , Recurrencia Local de Neoplasia/etiología , Procedimientos de Cirugía Plástica , Neoplasias Cutáneas/cirugía , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/epidemiología , Pronóstico , Modelos de Riesgos Proporcionales , Procedimientos de Cirugía Plástica/métodos , Estudios Retrospectivos , Factores de Riesgo , Trasplante de Piel , Colgajos Quirúrgicos , Adulto Joven

RESUMEN

BACKGROUND: In previous studies, our research group already evaluated the impact of aesthetic surgery on "quality of life" (QoL). This study evaluates QoL factors and perceptions of well-being after otoplasty as a single indication. METHODS: Eighty-one patients who underwent otoplasty were divided into three age groups: Youth 1 (Y1) = 8-12 years (n = 17), Youth 1 (Y2) = 13-17 years (n = 13), and Adult ≥18 years (n = 51). For competitive analysis, 2 groups of tests were used: a standardized self-assessment test on life satisfaction (FLZ(M)), the Glasgow Benefit Inventory (GBI), the standardized Rosenberg Self-Esteem Scale (RSES), the standardized Freiburg Personality Inventory (FPI-R), the Patient Health Questionnaire 4 (PHQ-4), and a self-developed and indication-specific questionnaire for "Adult" group. The tools for the groups Y1 and Y2 were: PHQ-4, KINDL(R), the Glasgow Child Benefit Inventory (GCBI), and a self-developed and indication-specific questionnaire either. RESULTS: Our data bared numerous significant improvements on patients' QoL. In the items "friends" (P = 0.036) and "freedom of anxiety" (P = 0.034) of the FLZ(M), important improvements were found. In section "satisfaction with appearance" (body image), the items "hair" (P = 0.003) and "ear" (P = 0.034) were to point out. The RSES (P = 0.001) and the FPI-R (P = 0.035) data indicated a well-balanced emotional stability. The results of the GBI/GCBI (P = 0.000/P = 0.000) showed a higher QoL of postsurgery patients. The data of the KINDL questionnaire provided increasing values in the modules "friends" (P = 0.033) and "total score" (P = 0.040) for boys of the ages 8 to 12. For all age groups, there was a less affinity to depression (PHQ-4) and a high satisfaction with the aesthetical result (indication-specific questionnaire). CONCLUSIONS: This study showed higher QoL in all age groups by using standardized tools in comparison with the norm data. The knowledge of postoperative psychologic benefits, such as "satisfaction with appearance" (body image) and "different areas of life," self-confidence, and self-esteem as well as lower level of depression support meaningfulness of otoplasty. LEVEL OF EVIDENCE: Therapeutic, III: Retrospective cohort or comparative study.

Asunto(s)

Actitud Frente a la Salud , Oído Externo/cirugía , Procedimientos de Cirugía Plástica/psicología , Calidad de Vida , Adolescente , Adulto , Anciano , Ansiedad/psicología , Imagen Corporal/psicología , Niño , Estudios de Cohortes , Depresión/psicología , Emociones , Estética , Femenino , Amigos/psicología , Humanos , Masculino , Persona de Mediana Edad , Satisfacción Personal , Personalidad , Estudios Retrospectivos , Autoimagen , Adulto Joven

RESUMEN

BACKGROUND: The aim of this study was to investigate if the expression of CD105 and Ets-1 was predictive of aggressive biologic behavior of non-melanoma skin cancers (NMSC) and to evaluate indicators of local recurrence. PATIENTS AND METHODS: A total of 144 patients with NMSC were included in the current study. Surgical specimens were independently examined for diagnosis confirmation and immunohistochemical expression of Ets-1 and CD105 by two dermatopathologists. RESULTS: The most common tumor type was basal cell carcinoma (n = 76), followed by squamous cell carcinomas (SCC) (n = 65). The most common anatomic location was the head and neck area (n = 115). The follow-up was ˃ 2 years in all examined cases. A statistically significant correlation was found between tumor local recurrence and age (P = 0.03), Ets-1 expression (P ˂ 0.0001) and CD105 expression (P ˂ 0.0001). CONCLUSIONS: Our data confirm that both Ets-1 and CD105 show promise as prognostic markers for local recurrence of NMSC. However, this statement is made with caution, and additional studies, with larger populations, are necessary to examine the correlation between these two markers and local recurrence. A better understanding of the pathogenesis of local recurrence in primary NMSC may result in potential therapeutic interventions.

Asunto(s)

Antígenos CD/metabolismo , Biomarcadores de Tumor/metabolismo , Recurrencia Local de Neoplasia/metabolismo , Proteína Proto-Oncogénica c-ets-1/metabolismo , Receptores de Superficie Celular/metabolismo , Neoplasias Cutáneas/metabolismo , Neoplasias Cutáneas/patología , Anciano , Anciano de 80 o más Años , Antígenos CD/genética , Biopsia con Aguja , Carcinoma Basocelular/metabolismo , Carcinoma Basocelular/patología , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patología , Estudios de Cohortes , Endoglina , Femenino , Humanos , Inmunohistoquímica , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/patología , Proteínas Oncogénicas/metabolismo , Pronóstico , Proteína Proto-Oncogénica c-ets-1/genética , Receptores de Superficie Celular/genética , Estudios Retrospectivos , Medición de Riesgo , Sensibilidad y Especificidad , Estadísticas no Paramétricas

RESUMEN

The aim of this study was to present our experience with the use of the Keystone Perforator Island Flap (KPIF) in a case series of patients with small size (diameter ≤ 2 cm) nasal defects which will be useful prospectively to assist plastic surgeons in planning a reconstructive strategy that will work. The KPIF was utilized in 30 patients with nasal defects post tumor extirpation. More than one type of KPIF (type I or type III) was used following the nasal subunit principle or a modified version of it. The mean follow-up period was 10.5 months. Overall good outcomes were achieved, with no major complications encountered, except minor wound dehiscence in 3 cases. It is the first time that the utilization of this flap is reported in nasal reconstruction. The versatility of the KPIF makes it a safe technique even in the hands of inexperienced surgeons under guidance for nasal defects up to 2 cm in diameter.

Asunto(s)

Neoplasias Nasales/cirugía , Nariz/cirugía , Colgajo Perforante , Rinoplastia/métodos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven

RESUMEN

BACKGROUND: Our study aimed to highlight anatomical similarities, differences, and variations in the microvascular anatomy between superior and inferior gluteal artery perforator (SGAP and IGAP) flaps. METHOD: Thirty gluteal flaps (15 SGAP and 15 IGAP) were studied on 22 adult fresh cadavers. We recorded the number and location of perforators, the characteristics of the main perforator (course, length, and diameter at the level of division at the greater sciatic foramen), and the anatomical variations of the submuscular venous plexus. RESULTS: The mean number of perforators was similar in both flaps (n = 7). We found a statistically significant difference in the total length of the vascular pedicle between SGAP (mean = 9.80 cm) and IGAP (mean = 13.36 cm) flaps, which correlated strongly with the difference in the intramuscular length (mean difference = 3.40 cm) of the perforator. There was no statistically significant difference in the diameter of the superior and inferior gluteal vessels at the point of pedicle division. The complex submuscular venous plexus, which is typically found on SGAP flaps deep to the sacral fascia, was never encountered on IGAP flaps. Perforators originating from the inferior gluteal artery were found on the lower half of five superior gluteal flaps. These were dominant perforators in two cases. We also report a rare anatomical communication between superior and inferior gluteal vessels deep to the piriformis muscle and a case of atheromatous disease of the inferior gluteal artery. CONCLUSION: Our findings are highly relevant to clinical practice and contribute to the understanding of the vascular anatomy of SGAP and IGAP flaps and the successful use of these challenging flaps. NO LEVEL ASSIGNED: This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

Asunto(s)

Arterias/anatomía & histología , Nalgas/irrigación sanguínea , Nalgas/inervación , Colgajos Quirúrgicos/irrigación sanguínea , Colgajos Quirúrgicos/inervación , Adulto , Cadáver , Humanos , Microcirculación , Microvasos/anatomía & histología

RESUMEN

PURPOSE: The aim of this study was to identify the predictive factors of a positive sentinel lymph node (SLN) in patients with cutaneous malignant melanomas and tumor progression. METHODS: From October of 2000 to January of 2006, 144 patients with cutaneous malignant melanoma underwent SLN biopsy. Patients were divided into two groups according to the SLN status (positive vs negative) which were compared with regards to patient demographics and primary tumor characteristics. RESULTS: In 37 (25.69%) patients SLN biopsy was positive . Nodular melanomas (p=0.047), blood (p=0.010) and lymph (p<0.001) vessel infiltration, mitotic rate (p=0.019) and Breslow thickness (p=0.012) were predictive of a positive SLN biopsy. The overall recurrence, mortality and the overall disease free survival (DFS) rates were 6.25, 1.4 and 93.75, respectively. CONCLUSION: SLN biopsy is the most important predictor of early disease recurrence and survival in patients with cutaneous malignant melanoma. Considering all the examined factors, a positive SLN biopsy is related with Breslow thickness and lymph vessel infiltration.

Asunto(s)

Metástasis Linfática/patología , Melanoma/patología , Biopsia del Ganglio Linfático Centinela , Neoplasias Cutáneas/patología , Adulto , Anciano , Supervivencia sin Enfermedad , Femenino , Humanos , Escisión del Ganglio Linfático , Metástasis Linfática/diagnóstico , Masculino , Melanoma/diagnóstico , Persona de Mediana Edad , Recurrencia Local de Neoplasia/diagnóstico , Recurrencia Local de Neoplasia/patología , Pronóstico , Neoplasias Cutáneas/diagnóstico , Melanoma Cutáneo Maligno

RESUMEN

Epigenetic mechanisms participate in melanoma development and progression. The effect of histone modifications and their catalysing enzymes over euchromatic promoter DNA methylation in melanoma remains unclear. This study investigated the potential association of p16(INK) (4A) promoter methylation with histone methyltransferase SETDB1 expression in Greek patients with sporadic melanoma and their correlation with clinicopathological characteristics. Promoter methylation was detected by methylation-specific PCR in 100 peripheral blood samples and 58 melanoma tissues from the same patients. Cell proliferation (Ki-67 index), p16(INK) (4A) and SETDB1 expression were evaluated by immunohistochemistry. High-frequency promoter methylation (25.86%) was observed in tissue samples and correlated with increased cell proliferation (P = 0.0514). p16(INK) (4A) promoter methylation was higher in vertical growth-phase (60%) melanomas than in radial (40%, P = 0.063) and those displaying epidermal involvement (P = 0.046). Importantly, p16(INK) (4A) methylation correlated with increased melanoma thickness according to Breslow index (P = 0.0495) and marginally with increased Clark level (I/II vs III/IV/V, P = 0.070). Low (1-30%) p16(INK) (4A) expression was detected at the majority (19 of 54) of melanoma cases (35.19%), being marginally correlated with tumor lymphocytic infiltration (P = 0.078). SETDB1 nuclear immunoreactivity was observed in 47 of 57 (82.46%) cases, whereas 27 of 57 (47.37%) showed cytoplasmic immunoexpression. Cytoplasmic SETDB1 expression correlated with higher frequency of p16(INK) (4A) methylation and p16(INK) (4A) expression (P = 0.033, P = 0.011, respectively). Increased nuclear SETDB1 levels were associated with higher mitotic count (0-5/mm(2) vs >5/mm(2) , P = 0.0869), advanced Clark level (III-V, P = 0.0380), epidermal involvement (P = 0.0331) and the non-chronic sun exposure-associated melanoma type (P = 0.0664). Our data demonstrate for the first time the association of histone methyltransferase SETDB1 with frequent methylation of the euchromatic p16(INK) (4A) promoter and several prognostic parameters in melanomas.

Asunto(s)

Islas de CpG , Inhibidor p16 de la Quinasa Dependiente de Ciclina/genética , Metilación de ADN , Melanoma/metabolismo , Regiones Promotoras Genéticas , Proteína Metiltransferasas/metabolismo , Neoplasias Cutáneas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Citoplasma/metabolismo , Epigénesis Genética , Femenino , Regulación Neoplásica de la Expresión Génica , Grecia , N-Metiltransferasa de Histona-Lisina , Humanos , Antígeno Ki-67/metabolismo , Masculino , Melanoma/genética , Persona de Mediana Edad , Mitosis , Pronóstico , Neoplasias Cutáneas/genética , Adulto Joven

RESUMEN

The effectiveness of radiotherapy in patients with basal cell carcinoma (BCC) has been already reported in the literature. However, there is little information about the irradiation of BCC in elderly patients, especially due to the low conformity of them to daily irradiation. Thirty-eight retrospectively selected elderly patients (78 years as median age) diagnosed with skin BCC of the head and neck area were treated with five weekly fractions of 600 cGy by three-dimensional conformal radiotherapy (3DCRT) as an adjuvant treatment. The primary endpoint was the relapse free survival. Acute toxicity, as secondary endpoint, was assessed according to EORTC/RTOG criteria. Among our patients, there were only three local recurrences at 15, 32 and 38 months post-3DCRT. There was no severe toxicity, while only 10 out of 38 patients presented grade II/III skin toxicity. Our proposed irradiation schedule seems effective in terms of local control and acute toxicity and could be an alternative scheme for elderly patients unfit for daily irradiation.

Asunto(s)

Carcinoma Basocelular/radioterapia , Irradiación Craneana/métodos , Fraccionamiento de la Dosis de Radiación , Neoplasias de Cabeza y Cuello/radioterapia , Radioterapia Conformacional , Neoplasias Cutáneas/radioterapia , Anciano , Anciano de 80 o más Años , Carcinoma Basocelular/patología , Irradiación Craneana/efectos adversos , Femenino , Neoplasias de Cabeza y Cuello/patología , Humanos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Radioterapia Adyuvante , Radioterapia Conformacional/efectos adversos , Estudios Retrospectivos , Neoplasias Cutáneas/patología , Factores de Tiempo , Resultado del Tratamiento

RESUMEN

PURPOSE: To investigate gender and other possible factors affecting the frequency and severity of postoperative complications in head and neck cancer free flap reconstruction. MATERIALS AND METHODS: A prospective longitudinal cohort study was conducted at the Greek Anticancer Institute, St. Savvas Hospital in head and neck cancer free flap reconstruction concerning postoperative complications. We documented the patients' demographic characteristics, social habits, and perioperative factors (ie, duration of general anesthesia), reconstructive techniques, neoadjuvant radiotherapy, and physical status. Initially, univariate statistical analysis was performed to confirm which predictor variables might influence the presence and severity of complications. Next, multivariate statistical analysis was performed using logistical regression and including the factors that were statistically significant on univariate analysis. RESULTS: From 1999 to 2009, we assessed 95 patients who had undergone surgery for head and neck cancer. Of the 95 patients, 24 were women and 71 were men. The patient age range was 20 to 87 years (mean 52, median 55). A total of 55 complications occurred in 49 patients (51.57%). Of the 55 complications, 12 (12.63%) were of major severity, 21 (22.10%) of median severity, and 22 (23.15%) of low severity. The statistical analysis revealed that the factors associated with complications were preoperative radiotherapy, female gender, and operation time. The factors associated with severe complications were female gender and alcohol use. CONCLUSIONS: Multivariate analysis of the data revealed that the factor associated with an increased incidence of postoperative complications was preoperative radiotherapy. Moreover, the variable that remained statistically significant and correlated with an increased incidence and severity of free flap reconstruction complications was female gender. Identifying the etiology of these findings is an intriguing field for additional research.

Asunto(s)

Colgajos Tisulares Libres/trasplante , Neoplasias de Cabeza y Cuello/cirugía , Procedimientos de Cirugía Plástica , Complicaciones Posoperatorias , Adulto , Anciano , Anciano de 80 o más Años , Consumo de Bebidas Alcohólicas/efectos adversos , Anestesia General/clasificación , Carcinoma de Células Escamosas/radioterapia , Carcinoma de Células Escamosas/cirugía , Estudios de Cohortes , Susceptibilidad a Enfermedades , Femenino , Estudios de Seguimiento , Colgajos Tisulares Libres/clasificación , Neoplasias de Cabeza y Cuello/radioterapia , Estado de Salud , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Tempo Operativo , Complicaciones Posoperatorias/clasificación , Estudios Prospectivos , Radioterapia Adyuvante/efectos adversos , Procedimientos de Cirugía Plástica/efectos adversos , Procedimientos de Cirugía Plástica/métodos , Factores Sexuales , Fumar/efectos adversos , Adulto Joven

RESUMEN

BACKGROUND: Diabetes can lead to impaired wound healing and skin grafts used surgically for diabetic wounds are often complicated with necrosis, although different therapies have been proposed. Adipose-derived stem cells (ASCs) participate in tissue repair processes and may have a role during impaired wound healing. In this study, autologous transplantation of ASCs was used to determine if it increases angiogenesis and skin graft survival and enhances wound healing in diabetic rats. METHODS: Adipose-derived stem cells were successfully isolated and cultured. A full-thickness skin graft model was used to determine the effects of locally administered ASCs in 10 rats rendered diabetic (group 1), whereas 10 others served as controls (group 2). Histological examination of skin grafts followed after 1 week. Additionally, immunohistochemical staining intensity of vascular endothelial growth factor (VEGF) and transforming growth factor ß3 (TGF-ß3) was assessed in all grafts. RESULTS: The gross and histological results showed significantly increased survival, angiogenesis, and epithelialization. Mean area of graft necrosis was significantly less in group 1 than in group 2 (7.49% vs 39.67%, P < 0.001). Statistically significant increase of capillary density, collagen intensity, VEGF, and TGF-ß3 expression was noted in group 1 compared with group 2. CONCLUSIONS: These findings suggest that autologous ASC transplantation can enhance skin graft survival in diabetic rats through differentiation, vasculogenesis, and secretion of growth factors such as VEGF and TGF-ß3. This might represent a novel therapeutic approach in skin graft surgery for diabetic wounds.

Asunto(s)

Diabetes Mellitus Experimental , Supervivencia de Injerto , Trasplante de Piel/métodos , Trasplante de Células Madre/métodos , Grasa Subcutánea/citología , Cicatrización de Heridas , Animales , Biomarcadores/metabolismo , Diferenciación Celular , Células Cultivadas , Diabetes Mellitus Experimental/inducido químicamente , Supervivencia de Injerto/fisiología , Masculino , Neovascularización Fisiológica , Distribución Aleatoria , Ratas , Ratas Sprague-Dawley , Estreptozocina , Factor de Crecimiento Transformador beta3/metabolismo , Trasplante Autólogo , Factor A de Crecimiento Endotelial Vascular/metabolismo , Cicatrización de Heridas/fisiología

RESUMEN

Infected pseudoaneurysm of the femoral artery represents a devastating complication of intravenous drug abuse, especially in the event of rupture. Operative strategy depends upon the extent of arterial injury and the coexistence of infection or sepsis. Options range from simple common femoral artery (CFA) ligation to complex arterial reconstruction with autologous grafts (arterial, venous, or homografts). We report herein the management of a 29-year-old male patient who was urgently admitted with a ruptured pseudoaneurysm of the right CFA, extending well above the inguinal ligament. Multidisciplinary approach with multiple arterial reconstructions and subsequent coverage of the tissue defect with a rectus abdominis musculocutaneous flap transposition was performed.