RESUMO
La cuantificación de la carga viral en sangre del Virus Epstein Barr (VEB) ha demostrado ser útil como marcador diagnóstico y pronóstico en específicos tipos de linfomas asociados al virus. 59 pacientes con desórdenes linfoproliferativos fueron reclutados al diagnóstico y se les realizó un estudio de carga viral para la determinación del DNA del VEB en sangre total. Se incluyeron: 46 Linfomas difuso de Células Grandes B Difuso, 3 Linfomas Hodgkin, 3 Linfomas nasal T/NK, 4 Leuce-mia/lymphoma T del Adulto (ATLL), 1 Linfoma T periférico no especificado, 1 Linfoma T paniculítico y 1 Linfoma Hidroa vaciniforme-like. Los resultados arrojaron: 13 casos positivos (rango 0.25-46,400 copies/ul): 7 fueron LCGBD, 2 Linfomas T/NK nasal, 2 ATLL, 1 Linfoma Hodgkin y 1 Linfoma Hidroa vaciniformelike. 11/13 casos positivos tuvieron estudio de EBER-CISH en tejido tumoral, el cual fue positivo en todos los casos. El estudio sugiere que la cuantificación en sangre total del DNA del VEB correlaciona con la presencia del virus en células tumorales y podría ser útil como biomarcador diagnóstico.
Cuantification of viral blood load for EBV has demonstrated to be useful as marker in diagnosis and prognosis in diferent specific lymphomas related to virus. 59 patients with diverse lymphoprolife-rative disorders were recluted at diagnosis to evaluate viral load of EBV DNA in whole blood. We included: 46 Diffuse large B cell Lymphoma (DLBCL), 3 Hodgkin Lymphoma, 3 T/NK nasal type lym-phoma, 4 Adult T Leukemia/lymphoma (ATLL), 1 T cell lymphoma unspecified, 1 T panicullitic lym-phoma and 1 Hydroa vacciniform like lymphoma . Results showed: 13 cases were positive (range 0.25-46,400 copies/ul): 7 were DLBCL, 2 T/NK nasal type Lymphoma, 2 ATLL, 1 Hodgkin Lymphoma y 1 Hidroa vacciniformelike lymphoma. 11/13 positive cases had EBER-CISH in tumoral tissue and it was positive in all cases.This study suggests cuantification in total whole blood for EBV DNA correlates with the presence of EBV in tumoral cells and it could be a useful diagnostic biomarker.
Assuntos
Masculino , Feminino , Humanos , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Carga Viral , Hospedeiro Imunocomprometido , Sangue , Transtornos LinfoproliferativosRESUMO
Foxp3 es un gen regulatorio clave requerido para el desarrollo y función de las células T regulatorias CD25+ CD4+ (Treg), una subpoblación de células T especializadas en el mantener el balance entre la inmunidad y la tolerancia. Este estudio tiene como objetivo determinar la especificidad y el valor pronóstico de la expresión de Foxp3 en el Linfoma de células T. Un estudio retrospectivo fue realizado en 33 pacientes colectados de pacientes con Linfoma /Leucemia T del adulto (ATLL), la expresión de Foxp3 en células tumorales fue detectado en 8/33(24%) casos de ATLL. No hubo diferencia estadística en sobrevida global entre el ATLL Foxp3 (+) y el ATLL Foxp3 (-). La expresión de Foxp3 puede darse en un subgrupo de ATLL y no es un factor pronóstico en esta entidad.
Foxp3 is a key regulatory gene required for the development and function of regulatory CD4+CD25+T cells (Treg), a subpopulation of T-cells specialized in maintaining the balance between immunity and tolerance. This study aimed to determine the specifity and prognostic value of the expression of Foxp3 in T cell Lymphoma. A retrospective study was performed on 33 patients collected from patients with Adult T lymphoma/leukemia (ATLL) in a general hospital from Peru. FOXP3 expression in tumour cells was confined to 8/33 of ATLL cases (24%). No statistic difference in overall survival betweeen (+) Foxp3 ATLL and (-) Foxp3 ATLL was found. FOXP3 is expressed in a subgroup of ATLL and it is nota prognostic factor in this entity.
Assuntos
Masculino , Feminino , Humanos , Genes Reguladores , Leucemia-Linfoma de Células T do AdultoRESUMO
Introducción: bexaroteno es un rexinoide aprobado en el tratamiento de estadios tempranos y avanzados del linfoma cutáneo de células T (LCCT). Caso Clínico: el presente reporte de casos mostramos los resultados del empleo de bexaroteno en dosis bajas más fototerapia o Interferon alfa 9 millones en el tratamiento del LCCT. Ocho pacientes fueron tratados , cinco fueron Micosis fungoides, dos Linfoma Epidermotrópico CD8 agresivo y uno fue un Síndrome Sézary. La respuesta global fue del 62.5 por ciento (5/8) y la duración media de respuesta fue de 20 meses. El bexaroteno en dosis bajas en combinación a fototerapia o interferon alfa 2a puede ser efectivo en el tratamiento del LCCT.
Introduction: Bexarotene is a rexinoid compound that is approved for use in the therapy for early and advanced stage cutaneous T-cell lymphoma (CTCL).Clinical Cases: We present in this report the results of the use of low-dose bexarotene plus phototherapy or alpha-interferon, nine million units, in the treatment of CTCL. Eight patients were treated, five had mycosis fungoides, two had CD-8 epidermothropic aggressive lymphoma. The overall response rate was 62.5 per cent (5/8), and the mean duration of response was 20 months. Low-dose bexarotene combined with phototherapy or alpha-interferon may be effective in the treatment of CTCL.
Assuntos
Humanos , Masculino , Adulto , Pessoa de Meia-Idade , Feminino , Fototerapia , Interferon-alfa , Linfoma Cutâneo de Células T/terapia , Relatos de CasosRESUMO
Primary colorectal lymphoma is a very rare disease. Primary colorectal lymphoma of diffuse large B-cells is a more frequent subtype representing 1% of all colon diseases. In a retrospective study, the clinical characteristics and treatment course of primary colorectal lymphoma of diffuse large B-cells between 1997 and 2003 were reviewed. According to Dawson's criteria, fourteen cases were identified. The average age was 65 and the ratio of men to women was 1:3. The most frequent signs and symptoms were abdominal pain (78%), diarrhea (49%) and abdominal tumor (35%). The most frequently involved regions were the cecum (42%), ascending colon (21%) and rectum (21%). Six were in Stage I, four in Stage II and four in Stage III. The 5-year survival per stage was 26, 11 and 5 months, respectively. Primary colorectal lymphoma of diffuse large B-cells usually affects the right part of the colon in an aggressive manner.
Assuntos
Neoplasias Colorretais , Linfoma Difuso de Grandes Células B , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Ceco/patologia , Colo/patologia , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/mortalidade , Neoplasias Colorretais/patologia , Neoplasias Colorretais/cirurgia , Ciclofosfamida/uso terapêutico , Doxorrubicina/uso terapêutico , Feminino , Humanos , Linfoma Difuso de Grandes Células B/diagnóstico , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Linfoma Difuso de Grandes Células B/mortalidade , Linfoma Difuso de Grandes Células B/patologia , Linfoma Difuso de Grandes Células B/cirurgia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prednisona/uso terapêutico , Reto/patologia , Estudos Retrospectivos , Fatores de Tempo , Vincristina/uso terapêuticoRESUMO
El Linfoma primario colorectal es una enfermedad muy infrecuente. El Linfoma difuso de células B grandes primario colorectal es el subtipo más frecuente y se constituye en el 1% de todas las malignidades del colon. En un estudio retrospectivo, se revisó las características clínicas y curso de tratamiento de los linfomas de células grandes B difuso primario colorectal entre 1997-2003. De acuerdo a los criterios de Dawson fueron identificados catorce casos. La edad media fue 65 años y la relación varón /mujer1.1.3. Los signos y síntomas más frecuentes fueron: dolor abdominal (78%), diarrea (49%) y tumor abdominal (35%). Los sitios más frecuentemente involucrados fueron:ciego (42%), colon ascendente (21%) y recto (21%). Seis tuvieron un estadío I , cuatro en estadío II y cuatro en estadio III. La sobrevida a 5 años por estadios fue: 26,11 y 5 meses respectivamente.El Linfoma primario colorectal de Células grandes B difuso usualmente afecta el colon derecho con un comportamiento agresivo.
Primary colorectal lymphoma is a very rare disease. Primary colorectal lymphoma of diffuse large B-cells is a more frequent subtype representing 1% of all colon diseases. In a retrospective study, the clinical characteristics and treatment course of primary colorectal lymphoma of diffuse large B-cells between 1997 and 2003 were reviewed.According to Dawsons criteria, fourteen cases were identified. The average age was 65 and the ratio of men to women was 1:3. The most frequent signs and symptoms were abdominal pain (78%), diarrhea (49%) and abdominal tumor (35%). The most frequently involved regions were the cecum (42%), ascending colon (21%) and rectum (21%). Six were in Stage I, four in Stage II and four in Stage III. The 5-year survival per stage was 26, 11 and 5 months, respectively. Primary colorectal lymphoma of diffuse large B-cells usually affects the right part of the colon in an aggressive manner.
Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Linfoma Difuso de Grandes Células B , Neoplasias ColorretaisRESUMO
Introducción: las características clínicopatológicas de los linfomas malignos varían de acuerdo a la geografía. La piel es el segundo lugar de compromiso extranodal de linfoma no Hodgkin .El linfoma primario cutáneo tienen un comportamiento clínico y pronóstico diferente de los linfomas sistémicos Objetivo: el objetivo de este estudio fue determinar la frecuencia relativa de los linfomas cutáneos y examinar la relevancia clínica de la nueva clasificación WHO/EORTC y la sobrevida de los casos peruanos de linfoma primario cutáneo. Material y método: se realizó un estudio retrospectivo clínicopatológico de 78 casos de linfomas cutáneos, diagnosticados desde 1997 al 2004 en el Hospital Edgardo Rebagliati Martins, Essalud, Lima,Perú. Las historias clínicas, biopsias y pruebas de inmunohistoquímica de los 78 pacientes enrolados fueron revisadas. Resultados: 67/78 (85,9%) fueron linfomas primarios cutáneos y 11/78 (14,1%) fueron linfomas cutáneos secundarios. El linfoma secundario cutáneo más frecuente fue el linfoma /leucemia T del adulto (ATLL) con 72% de los casos. El linfoma primario cutáneo más frecuente fue la micosis fungoide (MF) 30/67 (44,7%) , seguido del ATLL 13/67 (19,4%) y el linfoma T periférico no especificado 4/67 (6%). La sobrevida a 5 años para la MF, ATLL cutáneo y ATLL sistémico fue de 77%. 18% y 0% respectivamente. Conclusión: MF y ATLL cutáneo fueron los linfomas primarios cutáneos más frecuentes en nuestro hospital. La MF posee un buen pronóstico mientras el ATLL cutáneo posee pobre sobrevida.
Introduction: Clinico-pathological features of malignant lymphomas vary according to geography. The skin is the second site for extranodal Non-Hodgkin Lymphoma. Primary cutaneous lymphoma has a different clinical behavior and prognosis compared with systemic lymphomas. Objective: The aim of this study was to determine the relative rate of cutaneous lymphomas and to examine the clinical relevance of the new WHO/EORTC classification and survival in Peruvian persons with primary cutaneous lymphoma. Methods: We conducted a clinico-pathological retrospective study in 78 cases of cutaneous lymphoma diagnosed between 1997 and 2004 in a National General Hospital. Clinical records, hematoxylin & eosin-stained slides and immunohistochemical studies from 78 patients with malignant lymphoma of the skin were reviewed. Results: 67/78 cases (85,9%) were primary cutaneous lymphomas and 11/78 (14,1%) were secondary cutaneous lymphomas. Most frequent secondary cutaneous lymphoma was systemic adult T-cell lymphoma/Leukemia (ATLL), accounting for 72% of cases. Most frequently found primary cutaneous lymphoma were mycosis fungoides (MF), in 30/67 (44,7%) patients, cutaneous ATLL in 13/67 (19,4%), and non-specific peripheral T-cell lymphoma in 4/67 (6%). 5-year survival rates for MF, cutaneous ATLL and systemic ATLL were 77%, 18%, and 0%, respectively.Conclusions: MF and ATLL are the more frequently found primary cutaneous lymphomas in our hospital. MF has a good prognosis, while cutaneous ATLL has a poor survival rate.
Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso de 80 Anos ou mais , Leucemia-Linfoma de Células T do Adulto , Linfoma Cutâneo de Células T , Micose Fungoide , Estudos RetrospectivosRESUMO
Introducción: el desorden linfoproliferativo de células B asociado al virus Epstein Barr (VEB) y relacionado a la edad es una nueva entidad en nuestro medio. La infección por el VEB puede producir un crecimiento incontrolado de los linfocitos B que son normalmente inactivos, reportándose la aparición de desórdenes linfoproliferativos de curso agresivo y una pobre sobrevida.Casos clínicos: nueve pacientes de nacionalidad peruana diagnosticados como desorden linfoproliferativo de células B asociado al VEB y relacionado a la edad fueron incluidos en este reporte. Todos los pacientes fueron positivos para la prueba del EBER por hibridización in situ cromogénica (CISH). La morfología en todos los casos fue de linfoma de células grandes. La expresión inmunohistoquìmica de CD20, BCL6, CD10 y MUM-1/IRF4 fueron evaluados usando la técnica de tissue microarray. Los nueve pacientes tuvieron un fenotipo no centro germinal like. La mayoría de nuestros pacientes fueron pacientes con edad avanzada con pobre status performance, síntomas B, alto IPI y enfermedad avanzada. La sobrevida fue muy corta. Conclusión: reportamos en nuestro medio una nueva entidad denominada desorden linfoproliferativo de células B asociada al VEB, el cual presenta un curso agresivo y pobre pronóstico.
Introduction: Age-related B-cell lymphoproliferative disorder associatedwith Epstein-Barr virus (EBV) is a newly described condition in our country. EBV infection may lead to a non-controlled growth of normally inactive B-lymphocytes, so lymphoproliferative disorders with an aggressive course and poor survival occur. Clinical cases: Nine Peruvian patients diagnosed with age-related B-cell lymphoproliferative disorder associated EBV were included in this report. All patients were positive for EBER test using chromogenic in situ hybridization (CISH). Morphology in every case corresponded to large-cell lymphoma. CD20, BCL6, CD10, and MUM-1/IRF4 histochemical expression was assessed using a tissue microarray. All nive patients had a phenotype not germinal center-like. Most of our patients were elderly subjects with a poor performance status, type B symptoms, high values in the International Prognostic Index (IPI) and advanced disease. Their survival was quite short. Conclusion: We report for the first time a new condition called age-related B-cell lymphoproliferative disorder associated EBV, which has an aggressive course and a poor prognosis.
Assuntos
Humanos , Pessoa de Meia-Idade , Sobrevida , Transtornos Linfoproliferativos , Epidemiologia DescritivaRESUMO
Gemcitabine (Gemzar) and paclitaxel exhibit good activity and good safety profiles when used alone and together in the treatment of advanced breast cancer. In a phase II trial, 45 patients with metastatic breast cancer received gemcitabine at 1,200 mg/m2 on days 1 and 8 and paclitaxel at 175 mg/m2 on day 1 every 21 days. Twenty-seven patients (60.0%) had prior adjuvant therapy. Objective response was observed in 30 patients (objective response rate 66.7%, 95% confidence interval [CI] = 52%-71%), including complete response in 10 (22.2%) and partial response in 20 (44.4%). Median duration of response was 18 months (95% CI = 11-26.7 months), median time to tumor progression for the entire population was 11 months (95% CI = 7.1-18.7 months), median overall survival was 19 months (95% CI = 17.3-21.7 months), and the 1-year survival rate was 69%. Treatment was well tolerated, with grade 3/4 toxicities being infrequent. Grade 3/4 leukopenia, neutropenia, and thrombocytopenia were each observed in six patients (13.3%). No patient was discontinued from the study due to hematologic or nonhematologic toxicity. Thus, the gemcitabine/paclitaxel combination shows promising activity and tolerability when used as first-line treatment in advanced disease. The combination recently has been shown to be superior to paclitaxel alone as first-line treatment in anthracycline-pretreated advanced disease according to interim results of a phase III trial and it should be further evaluated in comparative trials in breast cancer.