title: Hemangioendothelioma: a rare vascular tumor in childhood and adolescence.
abstract: Most vascular tumors occurring in children are benign. They are recognized by their ability to form angiomatous structures. In some instances, there is no clear-cut line between a benign vascular tumor (or angioma) and a malignant vascular tumor (or angiosarcoma). The hemangioendothelioma is a rare tumor of vascular origin, involving bone or soft tissue, and represents 1% of all vascular neoplasms. Accurate diagnosis is critical in recommending the most appropriate therapy for each patient. The aim of this paper is to give a brief review of the literature of this rare entity, particularly in childhood and adolescence.
authors.affiliation: Department of Radiotherapy, Portuguese Institute of Oncology, Porto, Portugal.
authors.forename: M A
authors.initials: MA
authors.lastname: Costa
authors.forename: A
authors.initials: A
authors.lastname: Sousa
authors.forename: E
authors.initials: E
authors.lastname: Vieira
mesh_terms: D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000145:classification / Q000453:epidemiology; D002648:Child; D006390:Hemangioendothelioma / Q000145:classification* / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D006391:Hemangioma / Q000145:classification; D006394:Hemangiosarcoma / Q000145:classification; D006801:Humans; D015994:Incidence