title: Cutaneous epithelioid angiosarcoma: a potential diagnostic trap for cytopathologists.
abstract: We report on the cytologic features of a rare case of cutaneous epithelioid angiosarcoma of the scalp occurring in a 65-yr-old Chinese male. The prominent epithelioid features may cytologically mimic poorly-differentiated carcinoma, malignant melanoma, and even epithelioid sarcoma. Recognition of subtle cytologic features of vasoproliferation, immunohistochemical demonstration of endothelial markers, and ultrastructural examination are necessary before a final conclusion may be drawn.
authors.affiliation: Department of Pathology, University of Hong Kong, Queen Mary Hospital, Hong Kong.
authors.forename: W K
authors.initials: WK
authors.lastname: Ng
authors.forename: R J
authors.initials: RJ
authors.lastname: Collins
authors.forename: D
authors.initials: D
authors.lastname: Law
authors.forename: E
authors.initials: E
authors.lastname: Gwi
mesh_terms: D000368:Aged; D003581:Cytodiagnosis; D003593:Cytoplasm / Q000648:ultrastructure; D015622:Epithelioid Cells / Q000473:pathology* / Q000648:ultrastructure; D006394:Hemangiosarcoma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology