Radiological findings of two neoplasms with perivascular epithelioid cell differentiation
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چکیده
منابع مشابه
Radiological findings of two neoplasms with perivascular epithelioid cell differentiation
Perivascular epithelioid cell tumors (PEComas) constitute a rare subset of mesenchymal neoplasms classified by the World Health Organization in 2002. We present two cases of PEComas; the first is a cervical PEComa in a 35-year-old woman with no known past medical history who presented with a palpable pelvic mass; the second is an adnexal PEComa in a 39-year-old woman with a history of colitis w...
متن کاملTwo cases of perivascular epithelioid cell tumor of the uterus: clinical, radiological and pathological diagnostic challenge
BACKGROUND Perivascular epithelioid cell tumor (PEComa) is a rare subtype of mesenchymal origin tumor composed of epithelioid cells which exhibits immunohistochemical co-expressions of melanocytic markers and smooth muscle markers. CASE PRESENTATION In the first case, malignant uterine PEComa with vaginal and multiple lung metastasis was misdiagnosed preoperatively as uterine leiomyosarcoma d...
متن کاملHepatic perivascular epithelioid cell tumor
RATIONAL Perivascular epithelioid cell tumor (PEComa) is a rare mesenchymal neoplasm which expresses both myogenic and melanocytic markers. PEComas are found in a variety locations in the body, but up to now only approximately 30 cases about hepatic perivascular epithelioid cell tumor are reported in English language worldwide. PATIENT CONCERNS A 32-year-old woman was admitted in our hospital...
متن کاملuterine perivascular epithelioid cell tumor:a case report
perivascular epithelioid cell tumor (pecoma) is composed of hmb45+ epithelioid cells with clear to granular cytoplasm and perivascular distribution. we describe a uterine pecoma in a 33 years old woman where tumor cells were positive for hmb45 but negative for epithelial markers and negative or positive for smooth muscles markers.
متن کاملMicroscopic endometrial perivascular epithelioid cell nodules: a case report with the earliest presentation of a uterine perivascular epithelioid cell tumor
Perivascular epithelioid cell (PEC) tumors (PEComas) are a family of related mesenchymal tumors composed of PECs which co-express melanocytic and smooth muscle markers. Although their distinctive histologic, immunohistochemical, ultrastructural, and genetic features have been clearly demonstrated, their histogenesis and normal counterpart remain largely unknown. Precursor lesions of PEComas hav...
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ژورنال
عنوان ژورنال: Radiology Case Reports
سال: 2017
ISSN: 1930-0433
DOI: 10.1016/j.radcr.2017.06.001