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Vol. 40. Issue 1.
Pages 40-45 (January - March 2007)
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Vol. 40. Issue 1.
Pages 40-45 (January - March 2007)
Originales
Sarcoma de estroma endometrial. Estudio clinicopatológico e inmunofenotípico de 5 casos
Endometrial stromal sarcoma. Clinicopathologic and immunophenotypic study of 5 cases
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Pilar Soriano Sarrió, Miguel Martínez-Rodríguez, Diego Soriano, Antonio Llombart-Bosch, Samuel Navarro
Departamento de Anatomía Patológica, Hospital Clínico Universitario de Valencia
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Article information
Resumen
Introducción

El sarcoma de estroma endometrial uterino es un tumor muy poco frecuente con una incidencia de 0,4-3,4 por 100.000 mujeres, comprende menos del 1% de tumores malignos ginecológicos y el 2-5% de tumores malignos uterinos, siendo el tercer sarcoma en frecuencia después del carcinosarcoma y el leiomiosarcoma.

Material y métodos

Presentamos cinco casos de sarcoma de estroma endometrial diagnosticados en un periodo de siete años con la evolución clínica de las pacientes.

Resultados

Immunohistoquímicamente, estos tumores expresaban vimentina, receptores hormonales, CD10 y p53 (sarcomas de alto grado), siendo los marcadores musculares, la CK, el c-kit y ALK negativos. De estos cinco sarcomas dos de ellos eran de alto grado y tres de bajo grado (uno con diferenciación miogénica y otro combinado con áreas tipo «cordones sexuales», áreas miogénicas y áreas estromales puras).

Discusión

Asimismo se plantean una serie de diagnósticos diferenciales con metodología práctica para poder caracterizar estos tumores.

Palabras clave:
Sarcoma de estroma endometrial
CD10
diagnóstico diferencial
inmunohistoquímica
Summary
Introduction

Endometrial stromal sarcoma (ESS) is an infrequent neoplasm with an incidence of 0,4-3,4 cases/100.000 woman. This tumor represents less than 1% of the gynecologic malignancies as well as the 2,5% of the uterine malignant tumors being the third malignancy after carcinosarcoma and leiomyosarcoma.

Patients and methods

We present five cases of endometrial sarcoma, diagnosed in a period of seven years. This study includes a complete immunohistochemical analysis as well as the follow-up of the patients.

Results

Immunohistochemically, these tumors expressed vimentin, hormone receptors, CD10 and p53 (high grade sarcomas), whereas muscle markers, CK, c-Kit and ALK resulted negative. Two of the ESS were high grade tumors whereas the other three were considered low grade tumors (one with myogenic differentiation and the other combining sex cord areas, myogenic foci and pure stromal areas).

Discussion

We discuss their differential diagnosis with other uterine malignant tumors.

Key words:
Endometrial stromal sarcoma
CD10
differential diagnosis
immunohistochemistry

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