title: PEComa of the urinary bladder.
abstract: Perivascular epithelioid cell tumors are a family of related mesenchymal neoplasms that include angiomyolipoma, lymphangiomyomatosis, clear cell sugar tumor of the lung and a group of rare morphologically and immunophenotypically similar lesions that show immunoreactivity for both melanocytic (HMB-45 and/or melan-A) and smooth muscle (actin and/or desmin) markers. This case is presented for its rare occurrence and characteristic morphologic and immunohistochemical features.
authors.affiliation: Department of Urology, Apollo Hospitals, Chennai, Tamil Nadu, India. sanishuro@yahoo.com
authors.forename: Sanish S
authors.initials: SS
authors.lastname: Shringarpure
authors.forename: Joseph V
authors.initials: JV
authors.lastname: Thachil
authors.forename: Menon
authors.initials: M
authors.lastname: Maya
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy; D006417:Hematuria / Q000209:etiology; D006801:Humans; D007150:Immunohistochemistry; D058965:MART-1 Antigen / Q000032:analysis; D008297:Male; D058950:Melanoma-Specific Antigens / Q000032:analysis; D054973:Perivascular Epithelioid Cell Neoplasms / Q000737:chemistry / Q000150:complications / Q000473:pathology* / Q000601:surgery; D001749:Urinary Bladder Neoplasms / Q000737:chemistry / Q000150:complications / Q000473:pathology* / Q000601:surgery; D058951:gp100 Melanoma Antigen
chemical_list: D014408:Biomarkers, Tumor; D058965:MART-1 Antigen; C548667:MLANA protein, human; D058950:Melanoma-Specific Antigens; C548637:PMEL protein, human; D058951:gp100 Melanoma Antigen