title: Congenital hemangiopericytoma: two case reports.
abstract: Congenital hemangiopericytoma is a rare tumor consisting of capillaries surrounded by pericytes. Only histologically can the tumor be distinguished from other vascular hamartomas. For a long time the congenital type was considered benign; however, metastases have recently been described. A histologic diagnosis of all soft-tissue sarcomas should be made. We describe two patients with congenital hemangiopericytomas in whom the diagnosis was not suspected until after histologic examination. Long-term follow-up is indicated.
authors.affiliation: Department of Pediatrics, Emma Children's Hospital AMC, Amsterdam, The Netherlands.
authors.forename: A M
authors.initials: AM
authors.lastname: Bosch
authors.forename: W W
authors.initials: WW
authors.lastname: Hack
authors.forename: S
authors.initials: S
authors.lastname: Ekkelkamp
mesh_terms: D005260:Female; D006258:Head and Neck Neoplasms / Q000151:congenital* / Q000175:diagnosis; D006393:Hemangiopericytoma / Q000151:congenital* / Q000175:diagnosis; D006801:Humans; D007231:Infant, Newborn; D007866:Leg; D008297:Male