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1.
Diagn Pathol ; 18(1): 106, 2023 Sep 22.
Artículo en Inglés | MEDLINE | ID: mdl-37737200

RESUMEN

BACKGROUND: We previously reported Minichromosome maintenance 4 (MCM4) overexpression in gastric cancer. However, the clinicopathological significance of MCM4 in urothelial carcinoma (UC) has not been investigated. To clarify the clinicopathological significance of MCM4 in UC, we investigated MCM4 expression with immunohistochemistry (IHC). METHODS: We analyzed the expression and distribution of MCM4 in 124 upper tract urothelial carcinoma (UTUC) samples by IHC. Additionally, using 108 urine samples, we analyzed MCM4 Immunocytochemistry (ICC) expression in urine cytology. RESULTS: In normal urothelium, MCM4 expression was weak or absent. Meanwhile, the strong nuclear expression of MCM4 was observed in UTUC tissues, and it was detected in 77 (62%) of a total of 124 UTUC cases. MCM4-positive UTUC cases were associated with nodular/flat morphology, high grade, high T stage, and poor prognosis. Moreover, MCM4 expression was significantly higher in the invasive front than in the tumor surface. Similar results were also obtained in TCGA bladder cancer cohort. Additionally, MCM4 expression was associated with high expression of Ki-67, HER2, EGFR, and p53 in UTUC. Among representative cancer-related molecules, MCM4 had an independent predictive value for progression-free survival and high-grade UC. ICC for MCM4 was also performed on urine cytology slides and showed that the nuclear expression of MCM4 was more frequently found in UC cells than in non-neoplastic cells. The diagnostic accuracy of urine cytology was improved by combining MCM4 immunostaining with cytology. CONCLUSION: These results suggest that MCM4 might be a useful predictive biomarker for high-grade histology, tumor progression and poor prognosis in UC. Moreover, ICC for MCM4 might be helpful for UC detection as additional markers in the cytomorphology-based diagnosis.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias Gástricas , Neoplasias de la Vejiga Urinaria , Humanos , Neoplasias de la Vejiga Urinaria/diagnóstico , Carcinoma de Células Transicionales/diagnóstico , Supervivencia sin Progresión , Urotelio , Componente 4 del Complejo de Mantenimiento de Minicromosoma
2.
Pathol Int ; 73(9): 444-455, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37589430

RESUMEN

ßIII-Tubulin, encoded by the TUBB3 gene, is a microtubule protein. We previously reported that TUBB3 is overexpressed in renal cell carcinoma. We investigated the clinicopathological significance of TUBB3 in upper tract urothelial carcinoma (UTUC) by immunohistochemistry. In normal tissue, TUBB3 expression was weak or absent. In contrast, TUBB3 overexpression was observed in urothelial carcinoma (UC) tissues in 51 (49%) of 103 UTUC cases. TUBB3 overexpression was associated with nodular/flat morphology, high-grade disease, high T stage, and a poor prognosis. Similar results were obtained in The Cancer Genome Atlas bladder cancer cohort. TUBB3 expression was also associated with high Ki-67 labeling index, CD44v9, HER2, EGFR, and p53 expression in UTUC. Among representative cancer-related molecules, TUBB3 was an independent predictor of progression-free survival and high-grade UC. Finally, using urine cytology samples, we analyzed TUBB3 expression by immunocytochemistry. TUBB3 expression was more frequently found in UC cells than in nonneoplastic cells. The diagnostic accuracy of urine cytology was improved when combined with TUBB3 immunostaining. The findings suggest the importance of TUBB3 in tumor progression and its potential application as a biomarker for high-grade disease and the prognosis of UC. Moreover, combination with TUBB3 immunostaining might improve the diagnostic accuracy of urine cytology.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias Renales , Neoplasias de la Vejiga Urinaria , Humanos , Carcinoma de Células Transicionales/diagnóstico , Neoplasias de la Vejiga Urinaria/diagnóstico , Tubulina (Proteína) , Citodiagnóstico , Neoplasias Renales/diagnóstico
3.
Cancer Cytopathol ; 131(9): 548-560, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37300383

RESUMEN

BACKGROUND: Urothelial carcinoma (UC) is a common type of human cancer and, although urine cytology is a useful method for identifying high-grade UC (HGUC), its ability to diagnose low-grade UC (LGUC) is limited. The authors previously reported that annexin A10 (ANXA10) expression was strongly linked to both papillary and early stage LGUC and was inversely correlated with p53 expression in upper tract UC (UTUC) and bladder UC. However, it remains largely unknown whether ANXA10 is useful as a diagnostic marker for urine cytology. METHODS: In this study, the authors used 104 biopsy and 314 urine cytology samples to investigate the efficacy of ANXA10 and p53 expression by immunohistochemistry and immunocytochemistry. RESULTS: In immunohistochemistry analysis, expression levels of ANXA10 and p53 were either weak or absent in noncancerous tissues, whereas ANXA10 overexpression was observed patients with LGUC, and strong expression of p53 was identified in patients with HGUC. In immunocytochemistry analysis, sensitivity was not good for the detection of UC, especially UTUC, by cytology alone, but it was improved by combining cytology with ANXA10 and p53 to detect both bladder UC and UTUC. Receiver operating characteristic curve analysis also confirmed the diagnostic superiority of cytology combining ANXA10 and p53 for the detection of all UCs, including both HGUC and LGUC (area under the curve, 0.84). CONCLUSIONS: To the authors' knowledge, this is the first report that the combination of ANXA10 and p53 has potential application as a diagnostic immunomarker for improving the diagnostic accuracy of urine cytology.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias de la Vejiga Urinaria , Humanos , Carcinoma de Células Transicionales/diagnóstico , Carcinoma de Células Transicionales/patología , Neoplasias de la Vejiga Urinaria/patología , Proteína p53 Supresora de Tumor , Anexinas , Orina
4.
Case Rep Oncol ; 16(1): 82-87, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36820216

RESUMEN

Bilateral synchronous paratesticular leiomyoma (BSPL) is a rare tumor that originates from smooth muscle cells in the paratesticular region. Four BSPL cases have been reported sporadically, starting with the 1991 report by Aus and Boiesen. Herein, we report the case of a 60-year-old male with a bilateral scrotal mass with a maximum size of 7.5 cm. Histological examination revealed oval to spindle-shaped tumor cells with a fascicular growth pattern. Immunohistochemically, the tumor cells were positive for α-smooth muscle actin. The pathological diagnosis was a leiomyoma. Based on the simultaneous bilateral nature of the disease, BSPL was diagnosed. In conclusion, we encountered a rare case of BSPL, and our report may contribute to the understanding of this disease.

5.
Pathol Int ; 72(12): 606-616, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36169278

RESUMEN

Mucin 1 (MUC1) overexpression has been reported in many malignancies and is associated with a poor prognosis. However, the clinicopathological significance of MUC1 in upper tract urothelial carcinoma (UTUC) has not been investigated. We analyzed the expression and distribution of MUC1 in UTUC by immunohistochemistry. In normal urothelium, MUC1 expression was observed on the surface of umbrella cells. Meanwhile, the strong expression of MUC1 was observed in cell membranes and cytoplasm in UTUC tissues, and it was detected in 64 (58%) of a total of 110 UTUC cases. MUC1-positive UTUC cases were associated with nodular/flat morphology, high grade, high T stage, and lymphatic and venous invasion and poor prognosis. Additionally, MUC1 expression was associated with high expression of Ki-67, programmed death-ligand 1 (PD-L1), CD44 variant 9 (CD44v9), human epidermal growth factor receptor 2 (HER2), epidermal growth factor receptor (EGFR), and p53 in UTUC. Furthermore, immunocytochemistry for MUC1 on urine cytology slides demonstrated that the strong staining of MUC1 was more frequently found in tumor cells than in nonneoplastic cells. The diagnostic accuracy of urine cytology was improved by combining MUC1 immunostaining with cytology. These results suggest that MUC1 may be a prognostic biomarker in UTUC, and MUC1 exression has a potential application as a diagnostic immunomarker for urine cytology.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias de la Vejiga Urinaria , Neoplasias Urológicas , Humanos , Carcinoma de Células Transicionales/patología , Neoplasias de la Vejiga Urinaria/patología , Mucina-1 , Estudios Retrospectivos , Urotelio/patología , Pronóstico , Neoplasias Urológicas/diagnóstico , Neoplasias Urológicas/metabolismo , Neoplasias Urológicas/patología
6.
Diagn Cytopathol ; 50(5): E129-E135, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-34957705

RESUMEN

Mucinous urothelial carcinoma (UC) is a rare variant and only 18 cases of mucinous UC have been reported. In this article, we report a case of mucinous UC focusing on both cytological and histological findings. A 92-year-old female was referred to our hospital because of gross hematuria. Clinical computed tomography scan showed 2.2-cm papillary lesion in the lower part of the left ureter. Urine cytology was performed, and cytopathological findings showed that there were a few atypical cells with pale to clear cytoplasm, and a low amount of mucin in the background was identified by periodic acid-schiff (PAS) and alcian blue (AB) staining. Laparoscopic radical nephrectomy of left renal pelvis and ureter was performed. The gross examination revealed that a white-gray, papillary-sessile tumor was found in the lower part of the left ureter. Histologically, conventional high grade UC cells were seen in some areas, and tumor cells in other areas showed abundant clear cytoplasm with extracellular and intracytoplasmic mucin. Immunohistochemical analysis revealed that tumor cells were positive for CK7, CK20, p63, GATA3, MUC1, MUC2, and MUC5AC and negative for MUC6 and CDX2. Histopathological diagnosis was mucinous UC with clear cell component, and the pathological stage was pT1N0M0. The patient has remained well and disease-free for 3 months after the operation. Familiarity and recognizing the characteristic pathological findings of mucinous UC are important because it represents a malignant neoplasm.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias de la Vejiga Urinaria , Anciano de 80 o más Años , Biomarcadores de Tumor/análisis , Carcinoma de Células Transicionales/patología , Femenino , Hematuria , Humanos , Inmunohistoquímica , Nefrectomía , Neoplasias de la Vejiga Urinaria/patología
7.
Virchows Arch ; 480(3): 621-633, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-34842980

RESUMEN

We previously reported that claspin is a key regulator in the progression of gastric cancer and renal cell carcinoma. However, the clinicopathological significance of claspin in urothelial carcinoma (UC) has not been investigated. We analyzed the expression and distribution of claspin in UC cases by immunohistochemistry. In the non-neoplastic urothelium, the expression of claspin was either weak or absent, whereas UC tissues showed nuclear staining. The expression of claspin was detected in 58 (42%) of a total of 138 upper tract UC cases treated by radical nephroureterectomy without neoadjuvant chemotherapy. Claspin-positive UC cases were associated with nodular/flat morphology, variant histology, high tumor grade, high pathological T grade, and lymphatic and venous invasion. The expression of claspin was significantly associated with decreased progression-free survival and cancer-specific survival. In addition, claspin was co-expressed with Ki-67, PD-L1, HER2, EGFR, and p53 in consecutive tumor sections of UC. An immunohistochemical analysis of claspin in biopsy specimens revealed that strong to moderate claspin staining was more frequently observed in carcinoma in situ in comparison to dysplasia or the benign urothelium. Furthermore, immunocytochemistry for claspin on urine cytology slides demonstrated that the proportion of claspin-positive cells was significantly greater in high-grade UC than in benign cases. These results suggest that claspin may be a novel prognostic marker and a possible therapeutic target molecule for UC. Moreover, claspin could be a useful diagnostic biomarker of urothelial neoplasia.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias Renales , Neoplasias de la Vejiga Urinaria , Biomarcadores/análisis , Biomarcadores de Tumor/análisis , Carcinoma de Células Transicionales/patología , Humanos , Neoplasias Renales/patología , Neoplasias de la Vejiga Urinaria/patología , Urotelio/patología
8.
J Med Case Rep ; 12(1): 78, 2018 Mar 23.
Artículo en Inglés | MEDLINE | ID: mdl-29566731

RESUMEN

BACKGROUND: Pulmonary embolism occurs when a blood thrombus forms and travels from a vein in the body to an artery in the lung. Thrombi often develop in one of the deep veins of the legs, thighs, or pelvis, a condition known as deep vein thrombosis. In this report, we describe a rare instance of a patient who developed deep vein thrombosis and pulmonary embolism secondary to urinary retention, and we also review some of the literature. CASE PRESENTATION: A 75-year-old Japanese man visited our hospital with the complaint of lower extremity weakness. A physical examination revealed bilateral leg edema. Contrast-enhanced computed tomography showed thrombi in both the bilateral intrapelvic veins and the right pulmonary artery, with an extremely distended bladder. We diagnosed deep vein thrombosis and pulmonary embolism due to urinary retention, which was attributed to detrusor insufficiency owing to both taking an anticholinergic drug and neurogenic bladder. The patient was immediately started on both management of voiding dysfunction and anticoagulant therapy. CONCLUSIONS: We encountered a patient with deep vein thrombosis and pulmonary embolism secondary to urinary retention that could have been fatal. In such cases, clinicians should always take into account appropriate management of voiding dysfunction.


Asunto(s)
Edema/fisiopatología , Arteria Pulmonar/patología , Embolia Pulmonar/etiología , Vejiga Urinaria Neurogénica/complicaciones , Retención Urinaria/complicaciones , Trombosis de la Vena/etiología , Anciano , Anticoagulantes/uso terapéutico , Humanos , Pierna/fisiopatología , Masculino , Arteria Pulmonar/diagnóstico por imagen , Embolia Pulmonar/diagnóstico por imagen , Embolia Pulmonar/fisiopatología , Embolia Pulmonar/terapia , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Vejiga Urinaria Neurogénica/fisiopatología , Retención Urinaria/diagnóstico por imagen , Retención Urinaria/fisiopatología , Retención Urinaria/terapia , Trombosis de la Vena/diagnóstico por imagen , Trombosis de la Vena/fisiopatología , Trombosis de la Vena/terapia
9.
J Infect Chemother ; 18(5): 729-33, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-22491994

RESUMEN

Pharyngeal chlamydial and gonococcal infections can occur as a consequence of oral sex, and they also can be transmitted from the pharynx to the genital tract of sex partners. There have been many reports on the prevalence of pharyngeal Chlamydia trachomatis and Neisseria gonorrhoeae in men who have sex with men; however, there have been few reports on the prevalence of these pathogens in the pharynges of heterosexual men. In this study, we determined the prevalence of pharyngeal C. trachomatis and N. gonorrhoeae in 42 heterosexual men diagnosed with urethritis. Pharyngeal swabs and first-voided urine specimens were tested using the Gen-Probe APTIMA Combo 2 transcription-mediated amplification assay. The prevalence of pharyngeal C. trachomatis and N. gonorrhoeae in patients with urethritis was 2.4 % (1/42) and 11.9 % (5/42), respectively. Among patients with either chlamydial or gonococcal urethritis, 9.1 % (1/11) and 25.0 % (5/20) had pharyngeal C. trachomatis or N. gonorrhoeae, respectively. Our results suggest that screening for pharyngeal colonization by N. gonorrhoeae and C. trachomatis using validated nucleic acid amplification tests should be performed in heterosexual men diagnosed with urethritis.


Asunto(s)
Infecciones por Chlamydia/epidemiología , Chlamydia trachomatis/aislamiento & purificación , Gonorrea/epidemiología , Neisseria gonorrhoeae/aislamiento & purificación , Enfermedades Faríngeas/epidemiología , Adolescente , Adulto , Infecciones por Chlamydia/microbiología , Chlamydia trachomatis/genética , ADN Bacteriano/análisis , ADN Bacteriano/genética , Gonorrea/microbiología , Heterosexualidad/estadística & datos numéricos , Humanos , Japón/epidemiología , Masculino , Persona de Mediana Edad , Neisseria gonorrhoeae/genética , Enfermedades Faríngeas/microbiología , Faringe/microbiología , Prevalencia , Conducta Sexual , Uretra/microbiología , Uretritis/complicaciones , Uretritis/epidemiología
10.
Int J Radiat Oncol Biol Phys ; 82(2): e219-23, 2012 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-21640517

RESUMEN

PURPOSE: To reveal a predictive factor for biochemical recurrence (BCR) after permanent prostate brachytherapy (PPB) using iodine-125 seed implantation in patients with localized prostate cancer classified as low or intermediate risk based on National Comprehensive Cancer Network (NCCN) guidelines. METHODS AND MATERIALS: From January 2004 to December 2009, 414 consecutive Japanese patients with clinically localized prostate cancer classified as low or intermediate risk based on the NCCN guidelines were treated with PPB. The clinical factors including pathological data reviewed by a central pathologist and follow-up data were prospectively collected. Kaplan-Meier and Cox regression analyses were used to assess the factors associated with BCR. RESULTS: Median follow-up was 36.5 months. The 2-, 3-, 4-, and 5-year BCR-free rates using the Phoenix definition were 98.3%, 96.0%, 91.6%, and 87.0%, respectively. On univariate analysis, the Gleason score, especially primary Gleason grade 4 in biopsy specimens, was a strong predicting factor (p < 0.0001), while age, initial prostate-specific antigen (PSA) level, T stage, and minimal dose delivered to 90% of the prostate volume (D90) were insignificant. Multivariate analysis indicated that a primary Gleason grade 4 was the most powerful prognostic factor associated with BCR (hazard ratio = 6.576, 95% confidence interval, 2.597-16.468, p < 0.0001). CONCLUSIONS: A primary Gleason grade 4 carried a worse BCR prognosis than the primary grade 3 in patients treated with PPB. Therefore, the indication for PPB in patients with a Gleason sum of 4 + 3 deserves careful and thoughtful consideration.


Asunto(s)
Braquiterapia/métodos , Recurrencia Local de Neoplasia/sangre , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/patología , Neoplasias de la Próstata/radioterapia , Anciano , Biopsia , Intervalos de Confianza , Humanos , Radioisótopos de Yodo/uso terapéutico , Japón , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Pronóstico , Estudios Prospectivos , Próstata/patología , Carga Tumoral
11.
World J Urol ; 30(3): 375-8, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21847658

RESUMEN

AIM: To evaluate the impact of pathological review by pathologist with genitourinary expertise (PGU) on treatment modality of localized prostate cancer, we analyzed Gleason grade (GG) migration and the final treatment decision in a cohort of patients designated for permanent prostate brachytherapy (PPB). METHODS: From February 2005 to July 2010, a total of 247 patients with localized prostate cancer diagnosed by local community hospitals were referred to our hospital for PPB monotheray. All pathologic slides of prostate biopsies were reviewed by a single PGU. Patients ultimately selected their treatment modality from our recommendations based on the review. Indication for PPB monotherapy was the NCCN classification of patients as good or intermediate risk. In addition, patient with Primary GG 4 was regarded as unadapted case. RESULTS: Six cases were reinterpreted as no cancer (2.4%). GG change occurred in 94 cases (38.1%) of which 77 (81.9%) were upgraded and 17 (18.1%) downgraded. Of the total 247 patients, 86 (34.8%) changed therapies and 30 (12.1%) did so based on the pathologic slide review. CONCLUSIONS: Pathological review of biopsy specimens is mandatory for the determination of treatment modality especially in candidates for monotherapy of permanent prostate brachytherapy.


Asunto(s)
Braquiterapia/métodos , Neoplasias de la Próstata/patología , Neoplasias de la Próstata/radioterapia , Biopsia , Estudios de Cohortes , Humanos , Masculino , Clasificación del Tumor , Próstata/patología , Neoplasias de la Próstata/diagnóstico , Estudios Retrospectivos
12.
J Radiat Res ; 52(1): 59-68, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21160136

RESUMEN

The RBE-weighted absorbed dose, called "biological dose," has been routinely used for carbon-ion treatment planning in Japan to formulate dose prescriptions for treatment protocols. This paper presents a microdosimetric approach to measuring the biological dose, which was redefined to be derived from microdosimetric quantities measured by a tissue-equivalent proportional counter (TEPC). The TEPC was calibrated in (60)Co gamma rays to assure a traceability of the TEPC measurement to Japanese standards and to eliminate the discrepancies among matching counters. The absorbed doses measured by the TEPC were reasonably coincident with those measured by a reference ionization chamber. The RBE value was calculated from the microdosimetric spectrum on the basis of the microdosimetric kinetic model. The biological doses obtained by the TEPC were compared with those prescribed in the carbon-ion treatment planning system. We found that it was reasonable for the measured biological doses to decrease with depth around the rear SOBP region because of beam divergence, scattering effect, and fragmentation reaction. These results demonstrate that the TEPC can be an effective tool to assure the radiation quality in carbon-ion radiotherapy.


Asunto(s)
Algoritmos , Radioterapia de Iones Pesados , Dosis de Radiación , Radiometría/instrumentación , Radiometría/métodos , Efectividad Biológica Relativa , Diseño de Equipo , Análisis de Falla de Equipo , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
13.
Acta Med Okayama ; 63(3): 129-35, 2009 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19571899

RESUMEN

To determine health-related quality of life (HRQOL) after radical retropubic prostatectomy (RRP) or permanent prostate brachytherapy (BT), third party-conducted QOL surveys were prospectively compared. Between 2004 and 2005, 37 patients underwent RRP and 36 were treated with BT. A QOL survey consisting of the Medical Outcomes Study 36-Item Short Form (SF-36), the University of California, Los Angeles, Prostate Cancer Index (UCLA-PCI) and the International Prostate Symptoms Score (IPSS) was completed prospectively by a research coordinator at baseline, and at 1, 3, 6 and 12 months after treatment. The RRP patients scored well in general QOL except at 1 month after surgery, with their mental health better than at baseline by 6 months after surgery. Disease-specific QOL in RRP patients received a low score at 1 month for both urinary and sexual function, though urinary function rapidly recovered to baseline levels. BT patient QOL was not affected by the therapy except in the IPSS score. However, general and mental health scores in BT patients were inferior to those in RRP patients. This prospective study revealed differences in QOL after RRP and BT. These results will be helpful in making treatment decisions.


Asunto(s)
Braquiterapia , Prostatectomía , Neoplasias de la Próstata , Calidad de Vida , Anciano , Braquiterapia/efectos adversos , Braquiterapia/psicología , Estado de Salud , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias , Estudios Prospectivos , Prostatectomía/efectos adversos , Prostatectomía/psicología , Neoplasias de la Próstata/psicología , Neoplasias de la Próstata/radioterapia , Neoplasias de la Próstata/cirugía , Encuestas y Cuestionarios , Resultado del Tratamiento
14.
Igaku Butsuri ; 28(4): 132-41, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-21976254

RESUMEN

We developed a calculation technique to evaluate the biological dose distribution of heavy ion beams, and verified its reliability by comparison with experimental results. The calculation technique was developed by connecting two general-purpose Monte Carlo codes. In order to evaluate the radiation quality and biological effect, the microdosimetric kinetic model was adopted. We estimated the distribution of physical dose and radiation quality for the carbon broad beam with experiments and with Monte Carlo calculations. Relative biological effectiveness (RBE) was estimated from radiation quality, and biological dose could be calculated as the product of the physical dose and the RBE. Our calculations showed good agreement with experiments, not only for the physical dose, but also for the dose-averaged lineal energy as an expression of radiation quality and therefore biological dose. This finding indicates that our calculation tool will be useful to estimate biological dose distribution in the design of heavy ion radiation facilities or for quality assurance in treatment planning.


Asunto(s)
Radioterapia de Iones Pesados , Método de Montecarlo , Planificación de la Radioterapia Asistida por Computador , Efectividad Biológica Relativa , Reproducibilidad de los Resultados
15.
Acta Med Okayama ; 62(1): 9-13, 2008 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-18323866

RESUMEN

From January 2004 to March 2007, 308 patients with clinically localized prostate cancer were treated using iodine-125 (125I) seed implantation (permanent brachytherapy) at Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences. We evaluated the treatments efficacy and morbidity in 300 prostate cancer patients who were followed up for more than 1 month after brachytherapy. Based on the National Comprehensive Cancer Network (NCCN) guidelines, patients with a prostate volume of less than 40 ml in transrectal ultrasound imaging were classified as low or intermediate risk. The median patient age was 67 years (range 50 to 79 years), the median prostate-specific antigen (PSA) value before biopsy was 6.95 ng/ml (range 1.13 to 24.7 ng/ml), and the median prostate volume was 24.33 ml (range 9.3 to 41.76 ml). The median follow-up was 18 months (range 1 to 36 months) and the PSA levels decreased in almost all patients after brachytherapy. Although 194 of 300 patients (64.7%) complained of difficulty in urination, pollakisuria/urgency, miction pain, and/or urinary incontinence, all of which might be associated with radiation prostatitis during the first month after brachytherapy, these symptoms gradually improved. 125I seed implantation brachytherapy is safe and effective for localized prostate cancer within short-term follow up.


Asunto(s)
Braquiterapia/métodos , Radioisótopos de Yodo/uso terapéutico , Neoplasias de la Próstata/radioterapia , Anciano , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Morbilidad , Selección de Paciente , Neoplasias de la Próstata/diagnóstico por imagen , Neoplasias de la Próstata/epidemiología , Dosis de Radiación , Factores de Riesgo , Resultado del Tratamiento , Ultrasonografía
16.
Urology ; 66(1): 74-6, 2005 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-15992874

RESUMEN

OBJECTIVES: To determine the tolerability and morbidity rate of multichannel urodynamics (UDS). METHODS: A total of 154 consecutive patients were included in the present study; 87 men and 67 women underwent UDS and completed a questionnaire. All patients undergoing UDS were given a two-part questionnaire. The first part, given immediately after UDS, contained four questions regarding pain, embarrassment, and physical burden (assessed with a visual analogue scale on which 0 = not at all, 10 = unbearable), as well as willingness to undergo UDS again. The second part, given within 2 weeks after UDS, contained five questions regarding micturition pain, gross hematuria, dysuria, cloudy urine, and fever episodes after UDS. Urine specimens were also analyzed. RESULTS: The mean (+/-SD) degrees of pain, embarrassment, and physical burden were 2.27 +/- 2.53, 2.59 +/- 2.69, and 1.76 +/- 2.43, respectively, and 73.6% of men and 80.6% of women were willing to repeat UDS. The most common complaint after UDS was micturition pain. Two men and 1 woman had fever after UDS; there was no relationship between fever and urinary tract infections. Urinalysis showed that 4.6% of men and 7.5% of women had leukocyturia after the investigation. CONCLUSIONS: The complication rates of UDS were relatively low. For most patients, UDS were tolerable and acceptable. Proper informed consent is necessary.


Asunto(s)
Pruebas Diagnósticas de Rutina/efectos adversos , Urodinámica , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dolor/etiología , Estudios Prospectivos , Vergüenza , Encuestas y Cuestionarios
17.
Urol Int ; 74(3): 224-8, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-15812208

RESUMEN

INTRODUCTION: Radical prostatectomy is a common procedure for the treatment of clinically localized prostate cancer. However, urinary incontinence is a significant potential source of morbidity following surgery. Extracorporeal magnetic stimulation (ExMS) is a new technology used for pelvic muscle strengthening in the treatment of stress urinary incontinence. We investigated the clinical effects of ExMS on urinary incontinence after retropubic radical prostatectomy. PATIENTS AND METHODS: Ten patients who had suffered from urinary incontinence for more than 12 months following radical prostatectomy were enrolled in this study. The Neocontrol system was used. Treatment sessions were for 20 min, twice a week for 2 months. The frequency of the pulse field was 10 Hz for 10 min, followed by a second treatment at 50 Hz for 10 min. Objective and subjective measures included voiding diaries, 1-hour pad weight testing, and a quality of life survey at 1, 2, 3, and 6 months after starting the treatment. Urodynamic studies were performed before and after treatment. RESULTS: Three patients became dry (30%), 3 patients improved (30%), and 4 patients showed stationary symptoms (40%). In the 1-hour pad weight testing, the mean pad weight decreased from 25 to 10.3 g, and the quality of life scores had improved from 70.5 to 84.9 2 months after treatment. The frequency of leak episodes per day was reduced from 5.0 times before to 1.9 times after treatment. In the urodynamic study, mean maximum cystometric capacity and Valsalva leak point pressure increased from 197 +/- 53.2 to 309 +/- 85.3 ml and from 67.3 +/- 22.6 to 97.1 +/- 22.7 cm H2O after treatment, respectively (p < 0.05). 3 of 6 patients who showed improvement returned to the baseline values within 12 months after treatment and requested maintenance ExMS therapy. No side effects were observed. CONCLUSIONS: ExMS therapy offered a new option for urinary incontinence treatment after radical prostatectomy. Further studies are required to determine how long the benefits of treatment last and whether maintenance therapy is necessary.


Asunto(s)
Magnetismo/uso terapéutico , Estimulación Física/métodos , Complicaciones Posoperatorias/terapia , Prostatectomía , Incontinencia Urinaria/terapia , Anciano , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Diafragma Pélvico/fisiopatología , Proyectos Piloto , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/fisiopatología , Calidad de Vida , Estudios Retrospectivos , Resultado del Tratamiento , Incontinencia Urinaria/etiología , Incontinencia Urinaria/fisiopatología , Urodinámica/fisiología
18.
Urology ; 65(3): 493-7, 2005 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-15780362

RESUMEN

OBJECTIVES: We assessed the accuracy of two noninvasive, ultrasound methods of diagnosing bladder outlet obstruction (BOO). The potential for the combined methods to enhance the accuracy of diagnosis was also assessed. METHODS: We evaluated 30 male outpatients using two recently developed diagnostic methods, transabdominal ultrasound grading of intravesical prostatic protrusion (IPP) and Doppler ultrasound urodynamics (Doppler UDS), as well as conventional pressure flow studies according to the research protocol. IPP has been reported to be a useful anatomic parameter for the assessment of BOO. Doppler UDS uses transperineal ultrasonography to measure the velocity flow of urine at the prostatic and sphincteric urethras. We recruited 168 outpatients; however, of the 57 patients who fulfilled all the research criteria, only 30 were able to undergo conventional pressure flow study analysis. The results of all three diagnostic methods were analyzed statistically for reliability and relationship in the 30 patients with a BOO index from the conventional pressure flow study. RESULTS: IPP grading correlated well with the BOO index (Spearman's rho 0.624), as did the Doppler UDS parameter (Spearman's rho 0.736). The combination of IPP grading and Doppler UDS showed good sensitivity and specificity. CONCLUSIONS: We confirmed the accuracy of the two novel methods. The combination of the two methods may be a novel standard in the diagnosis of BOO in male patients.


Asunto(s)
Obstrucción del Cuello de la Vejiga Urinaria/diagnóstico por imagen , Anciano , Humanos , Masculino , Persona de Mediana Edad , Próstata/diagnóstico por imagen , Hiperplasia Prostática/complicaciones , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Ultrasonografía Doppler , Obstrucción del Cuello de la Vejiga Urinaria/etiología , Urodinámica , Grabación en Video
19.
Urol Int ; 73(3): 252-7, 2004.
Artículo en Inglés | MEDLINE | ID: mdl-15539846

RESUMEN

INTRODUCTION: We previously developed a noninvasive video urodynamic study using color Doppler ultrasonography. We sought the best flow velocity-related parameter which would allow prediction of an improvement in lower urinary tract symptoms (LUTS) after alpha 1-blocker treatment. METHODS: Twenty-two men with benign prostatic hyperplasia who were treated with a nonselective alpha 1-blocker (urapidil) were included. Subjective symptoms were evaluated using the International Prostate Symptom Score (IPSS) before and after alpha 1-blocker treatment. We measured the flow velocities using a transperineal ultrasound technique in the distal prostatic urethra just proximal to the external urethral sphincter (V1) and in the sphincteric urethra (V2), and used them to obtain the velocity ratio (VR=V1/V2). The corresponding functional cross-sectional areas of the urethra at these two sites (A1 and A2) were calculated as Q(max)/V. All these parameters obtained by the velocity-flow urodynamics were compared before treatment and after 4 weeks. RESULTS: After treatment, V1 and VR were decreased, and A1 was increased. V2 correlated best with the change in IPSS before and after alpha 1-blocker therapy, with Spearman's rho of 0.584. All men with V2 exceeding 50 cm/s did not show an improvement in the LUTS. CONCLUSIONS: The maximum flow velocity at the sphincteric urethra (V2) can predict the subjective outcome of alpha 1-blocker treatment. The velocity-flow parameters changed after alpha 1-blocker treatment. We confirmed that the transperineal ultrasound urodynamic study is not only noninvasive but also informative.


Asunto(s)
Antagonistas Adrenérgicos alfa/uso terapéutico , Piperazinas/uso terapéutico , Hiperplasia Prostática/tratamiento farmacológico , Obstrucción del Cuello de la Vejiga Urinaria/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Humanos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Hiperplasia Prostática/complicaciones , Hiperplasia Prostática/diagnóstico por imagen , Hiperplasia Prostática/fisiopatología , Ultrasonografía Doppler en Color , Obstrucción del Cuello de la Vejiga Urinaria/diagnóstico por imagen , Obstrucción del Cuello de la Vejiga Urinaria/etiología , Obstrucción del Cuello de la Vejiga Urinaria/fisiopatología , Trastornos Urinarios/diagnóstico por imagen , Trastornos Urinarios/tratamiento farmacológico , Trastornos Urinarios/etiología , Trastornos Urinarios/fisiopatología , Urodinámica
20.
Int J Urol ; 11(8): 602-6, 2004 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-15285749

RESUMEN

BACKGROUND: Extracorporeal magnetic innervation (ExMI) is a new technology used for pelvic muscle strengthening for the treatment of stress urinary incontinence. We explored whether this new technology is effective for patients with urge incontinence, as well as those with stress urinary incontinence. METHODS: We studied 20 patients with urge incontinence and 17 patients with stress urinary incontinence. The Neocontrol system (Neotonus Inc., Marietta, GA) was used. Treatment sessions were for 20 min, twice a week for 8 weeks. Evaluations were performed by bladder diaries, one-hour pad weight testing, quality-of-life surveys and urodynamic studies. RESULTS: Of the urge incontinence cases, five patients were cured (25.0%), 12 patients improved (60.0%) and three patients did not show any improvement (15.0%). Leak episodes per day reduced from 5.6 times to 1.9 times at 8 weeks (P < 0.05). Eight patients with urge incontinence recurred within 24 weeks after the last treatment (47.1%). Of the stress incontinence cases, nine patients were cured (52.9%), seven patients improved (41.1%) and one patient did not show any improvement (6%). In one-hour pad weight testing, the mean pad weight reduced from 7.9 g to 1.9 g at 8 weeks (P < 0.05). Three patients returned to the baseline values within 24 weeks after the last treatment (17.6%). No side-effects were experienced by any of the patients. CONCLUSION: Although the results for urge incontinence were less effective than for stress urinary incontinence, ExMI therapy offers a new option for urge incontinence as well as stress urinary incontinence.


Asunto(s)
Magnetismo/uso terapéutico , Estimulación Física/métodos , Incontinencia Urinaria de Esfuerzo/terapia , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Diafragma Pélvico/inervación , Diafragma Pélvico/fisiopatología , Raíces Nerviosas Espinales/fisiopatología , Resultado del Tratamiento , Vejiga Urinaria/inervación , Vejiga Urinaria/fisiopatología , Urodinámica
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