Carcinosarcoma ovárico asociado a carcinoma seroso intraepitelial tubárico

El carcinosarcoma primario ovárico es una neoplasia de baja incidencia, que suele ser diagnosticado en estadios avanzados y cursa con un mal pronóstico. Se comunica el caso de una paciente de 64 años con una tumoración abdominopélvica de 15 cm. El examen histológico evidenció una neoplasia maligna bifásica ovárica asociada a un carcinoma seroso intraepitelial tubárico, hallazgo que estaría en relación con la patogénesis de esta neoplasia.

Primary ovarian carcinosarcoma is a low incidence neoplasm that is usually diagnosed in advanced stages and has a poor prognosis. We report the case of a 64-yearold female patient with a 15 cm abdominopelvic tumor. Histological examination revealed a malignant ovarian biphasic malignancy associated with a serous tubal intraepithelial carcinoma, a finding that would be related to the pathogenesis of this neoplasm.

Uterine Malignant Mixed Müllerian Tumors Following Treatment with Selective Estrogen Receptor Modulators in Patients with Breast Cancer: A Report of 13 Cases and Their Clinicopathologic Characteristics

BACKGROUND: Breast cancer treatment with selective estrogen receptor modulators (SERMs) increases the incidence of uterine malignant mixed Müllerian tumors (uMMMTs). We examine clinicopathologic characteristics and prognosis of SERM-associated uMMMTs (S-uMMMTs) and discuss possible pathogenetic mechanisms. METHODS: Among 28,104 patients with breast cancer, clinicopathologic features and incidence of uMMMT were compared between patients who underwent SERM treatment and those who did not. Of 92 uMMMT cases that occurred during the same period, incidence, dose, and duration of SERM treatment, as well as overall survival rate, were compared for patients with breast cancer who underwent SERM treatment and those who did not (S-uMMMT vs NS-uMMMT) and for patients without breast cancer (de novo-uMMMT). Histopathological findings and immunophenotypes for myogenin, desmin, p53, WT-1, estrogen receptor (ER) α, ERβ, progesterone receptor, and GATA-3 were compared between S-uMMMT and de novo-uMMMT. RESULTS: The incidence of S-uMMMT was significantly higher than that of NS-uMMMT (6.35-fold). All patients with SERM were postmenopausal and received daily 20–40 mg SERM. Cumulative SERM dose ranged from 21.9 to 73.0 g (mean, 46.0) over 39–192 months (mean, 107). Clinicopathologic features, such as International Federation of Gynecology and Obstetrics stage and overall survival, were not significantly different between patients with S-uMMMT and NS-uMMMT or between patients with S-uMMMT and de novo-uMMMT. All 11 S-uMMMT cases available for immunostaining exhibited strong overexpression/null expression of p53 protein and significantly increased ERβ expression in carcinomatous and sarcomatous components. CONCLUSIONS: SERM therapy seemingly increases risk of S-uMMMT development; however, clinicopathologic features were similar in all uMMMTs from different backgrounds. p53 mutation and increased ERβ expression might be involved in the etiology of S-uMMMT.

Tumores müllerianos mixtos malignos uterinos / Uterine malignant mixed mullerian tumors

Los tumores müllerianos mixtos malignos o carcinosarcomas son neoplasias poco frecuentes y altamente agresivas que suelen presentarse en pacientes mayores de 60 años, generalmente en forma de metrorragia posmenopáusica y/o presencia de masas uterinas. Entre los factores de riesgo reconocidos está descrita la historia de irradiación previa del área pélvica. Presentamos 3 casos clínicos de pacientes diagnosticadas y tratadas de tumores müllerianos mixtos uterinos malignos, existiendo en todos ellos el antecedente de neoplasias que habían precisado radioterapia pélvica como parte de su tratamiento.

The malignant Mullerian mixed tumors are rare and highly aggressive, these tumors usually occur in women over 60 years and the most common clinical appearance is that of postmenopausal vaginal bleeding or the presence of uterine mass. As a risk factor is described the history of prior irradiation of the pelvic area. We reported the case of three patients with mullerian mixed tumors, in all these cases the patients have a history of cancer who required pelvic radiation as part of their treatment.

Malignant Mixed Mullerian Tumor of Fallopian Tube with Multiple Distinct Heterologous Components

We experienced a case of primary malignant mixed mullerian tumors (MMMT) of the fallopian tube of FIGO stage I. In addition to endometrioid adenocarcinomas, multiple apparent heterologous elements encompassing myxoid chondrosarcoma, osteosarcoma, myxoid liposarcoma and well differentiated angiosarcoma were recognized as separate nodules. These findings have not been described previously in MMMTs of the female genital tract.