A recurrent perivascular epithelioid cell tumor of sigmoid colon with pancreatic metastasis: an extremely rare case report and review of the literature

Abstract

Dear Editor: The World Health Organization has defined perivascular epithelioid cell tumors (PEComas) as Brare mesenchymal tumors composed of histologically and immunohistochemically distinctive perivascular epithelioid cells (PECs)^. Featuring a perivascular distribution, the PECs usually present a morphological style of epithelioid spindle shape, with a… (More)
DOI: 10.1007/s00384-015-2443-z

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