title: Intravascular papillary endothelial hyperplasia (Masson's hemangioma) presenting as a soft-tissue sarcoma.
abstract: Intravascular papillary endothelial hyperplasia (Masson's hemangioma) is an unusual benign, non-neoplastic, vascular lesion characterized histologically by papillary fronds lined by proliferating endothelium. It may appear as a primary or pure form developing in a distended vessel, or it can be associated with hemangiomas, pyogenic granulomas, or lymphagiomas. Nearly all lesions are intimately associated with a thrombus in various stages of organization. The main significance of intravascular papillary endothelial hyperplasia is its clinical and histological resemblance to soft-tissue sarcoma and possible misinterpretation as such. A case of intravascular papillary endothelial hyperplasia clinically diagnosed and treated as a low-grade angiosarcoma, in a 60-year-old man, presenting with a mass in the left thigh, is reported.
authors.affiliation: Department of Surgical Oncology, Hellenic Anticancer Institute, "Saint Savvas" Hospital, Athens, Greece. dkorkolis_2000@yahoo.com
authors.forename: Dimitris P
authors.initials: DP
authors.lastname: Korkolis
authors.forename: Maria
authors.initials: M
authors.lastname: Papaevangelou
authors.forename: George
authors.initials: G
authors.lastname: Koulaxouzidis
authors.forename: Nikos
authors.initials: N
authors.lastname: Zirganos
authors.forename: Helen
authors.initials: H
authors.lastname: Psichogiou
authors.forename: Perikles P
authors.initials: PP
authors.lastname: Vassilopoulos
mesh_terms: D003937:Diagnosis, Differential; D006390:Hemangioendothelioma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012509:Sarcoma / Q000175:diagnosis; D012983:Soft Tissue Neoplasms / Q000175:diagnosis; D013848:Thigh