title: Epithelioid angiomyolipoma: appearance on fine-needle aspiration report of a case.
abstract: Epithelioid angiomyolipoma is a recently recognized clinicopathologic entity first described by Martignoni et al. in 1995. Since then, several articles have further clarified its histogenesis and histologic features. Due to the presence of polygonal cells with voluminous cytoplasms, this neoplasm is often mistaken for renal-cell carcinoma. In this case presentation, we describe the cytologic features of an epithelioid angiomyolipoma obtained by fine-needle aspiration. The histogenesis and how it relates to diagnosis is briefly discussed. The importance of ancillary techniques in the differential diagnosis of epithelioid cells obtained in a renal aspirate is reviewed.
authors.affiliation: Department of Pathology, William Beaumont Hospital, Royal Oak, Michigan 48073-6769, USA.
authors.forename: W D
authors.initials: WD
authors.lastname: Mojica
authors.forename: S
authors.initials: S
authors.lastname: Jovanoska
authors.forename: E G
authors.initials: EG
authors.lastname: Bernacki
mesh_terms: D000328:Adult; D018207:Angiomyolipoma / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D000951:Antigens, Neoplasm; D001707:Biopsy, Needle; D002292:Carcinoma, Renal Cell / Q000473:pathology; D003937:Diagnosis, Differential; D015622:Epithelioid Cells / Q000737:chemistry / Q000473:pathology*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007381:Intermediate Filament Proteins / Q000032:analysis; D007680:Kidney Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D058950:Melanoma-Specific Antigens; D009363:Neoplasm Proteins / Q000032:analysis
chemical_list: D000951:Antigens, Neoplasm; D007381:Intermediate Filament Proteins; D058950:Melanoma-Specific Antigens; D009363:Neoplasm Proteins