ABSTRACT
Neste trabalho, descreveu-se o primeiro caso de hemangioma esclerosante registrado em um exemplar adulto do linguado Paralichthys orbignyanus. Produzido a partir de reprodução artificial, o peixe em questão tinha aproximadamente 10 anos de idade e fazia parte de um plantel de reprodutores. Ao ser retirado do tanque, notou-se a presença de lesão mandibular com escoriações e focos hemorrágicos. Amostras do tumor foram coletadas da mandíbula para análise histopatológica. Microscopicamente foi observada uma proliferação de numerosos vasos sanguíneos rodeados por um estroma conectivo denso. A etiologia dessa neoplasia é desconhecida, mas o fato de o exemplar ter permanecido por muitos anos em cativeiro pode ter contribuído para o surgimento desse tipo de lesão, devido aos choques mecânicos contra a parede do tanque que acontecem esporadicamente.(AU)
In this study, we described the first case of sclerosing haemangioma in an adult Brazilian flounder Paralichthys orbignyanus. Produced by artificial reproduction, the fish was approximately 10 years old and was maintained at a breeding stock. When removed from the tank, mandibular lesion with excoriations and hemorrhagic foci were noted. Tumor samples were collected from the mandible for histopathological analysis. Proliferation of numerous blood vessels surrounded by dense connective stroma was observed microscopically. The etiology of this neoplasia is unknown, but the fact that the specimen remained in captivity for many years, may have contributed to the appearance of this type of lesion, due to sporadic mechanical shocks to the tank wall.(AU)
Subject(s)
Animals , Fishes/anatomy & histology , Histiocytoma, Benign Fibrous/classification , Neoplasms/classificationABSTRACT
Objetivos: Describir los diferentes linfomas cutáneos conforme a la clasificación WHO- EORTC, observados en el Instituto Nacional de Cancerología (INC) entre el 1° de enero de 1995 y abril de 2008. Métodos: Estudio retrospectivo, descriptivo, donde se incluyó a los pacientes con diagnóstico de linfoma cutáneo en el INC desde enero de 1995 hasta abril de 2008. La ubicación de las historias clínicas se realizó utilizando la base de datos del Departamento de Patología. El análisis estadístico se realizó mediante el programa Epi info 2008. Resultados: Se revisaron 252 historias y se incluyó a 160 pacientes en el estudio: 139 linfomas T (87%) y 21 linfomas B (13%). El linfoma más común fue la micosis fungoide (63% de los casos). Dentro de las variantes descritas de micosis fungoide (MF) llamó la atención la frecuencia de MF hipopigmentadas (13%). El grupo de enfermedades linfoproliferativas CD30+ fue el segundo en frecuencia dentro de los linfomas T. En el grupo de linfomas B los linfomas indolentes de excelente pronóstico se presentaron en un 5% de los casos. Conclusiones: Los linfomas cutáneos primarios son tumores raros. Predominan los linfomas de células T sobre los B. La mayoría de los casos son linfomas de bajo grado, y deben tratarse con terapias dirigidas a la piel. Dentro de cada categoría existen linfomas que van a progresar y comprometer órganos internos.
Objectives: To describe different cutaneous lymphomas in accordance with WHO-EORTC classification under observation at the National Cancer Institute (NCI) between January 1, 1995 and April, 2008. Methods: A descriptive, retrospective study was carried out which included patients diagnosed with cutaneous lymphoma at the NCI from January 1995 until April 2008. Clinical cases were taken from Pathology Department data base. Statistical analysis was performed with Epi 2008 info program. Results: A total of 252 case histories were reviewed, and 160 patients were included in the study: 139 T-cell lymphomas (87%) and 21 B-cell lymphomas (13%). The most common (63% of cases) was mycosis fungoides (MF). Among the variations of MF described, the frequency of hypopigmented MF (13%) stood out. The lymphoproliferative CD30+ disease group was the second most frequent among T-cell lymphomas. In the B-cell lymphoma group, the indolent lymphomas with excellent prognosis made up 5% of cases. Conclusions: Primary cutaneous lymphomas are rare tumors. T-cell lymphomas predominate over B-cell. Most cases are low grade lymphomas and should be treated with skin therapies. Within each category, lymphomas exist that will progress and compromise internal organs.
Subject(s)
Humans , Male , Female , Young Adult , Aged , Cohort Studies , Epidemiologic Studies , Epidemiology, Descriptive , Lymphoma, Non-Hodgkin/classification , Mycosis Fungoides/classification , Retrospective Studies , Colombia/epidemiology , Histiocytoma, Benign Fibrous/classification , Lymphoma, Primary Cutaneous Anaplastic Large Cell , Lymphoma, T-Cell, Cutaneous/classificationABSTRACT
El fibrohistiocitoma maligno (F.H.M.) es un sarcoma pleomórfico de partes blandas con celularidad histiocítico-fibroblástica. Aparece entre la 5a. y 7a. décadas de la vida. La localización más común en la piel es en las extremidades. Las recaídas son frecuentes, por lo que es necesario un tratamiento quirúrgico adecuado. Se presenta un caso de recaída post-quirúrgica de F.H.M. en el brazo izquierdo, en un paciente de 68 años de edad, sin compromiso sistémico hasta la fecha