title: Infantile hemangiopericytoma--case report and literature review.
abstract: Infantile hemangiopericytoma is a rare soft tissue neoplasm of pericytic origin and is almost always benign, despite its worrisome pathologic features. We describe a 2-month-old male infant with a soft tissue mass on his right thigh. Histologically, the lesion showed a characteristic hemangiopericytoma-like vascular pattern, multilobulation, and moderate mitotic activity. These morphologic features were prediagnosed as infantile hemangiopericytoma. However, immunohistochemical and ultrastructural studies revealed a heterogeneous cellular composition, primarily pericytes and endothelial cells, similar to that observed in infantile myofibromatosis.
authors.affiliation: Department of Dermatology, Nippon Medical School, Tokyo, Japan. aya-f@nms.ac.jp
authors.forename: A
authors.initials: A
authors.lastname: Futagami
authors.forename: M
authors.initials: M
authors.lastname: Aoki
authors.forename: I
authors.initials: I
authors.lastname: Iwakiri
authors.forename: H
authors.initials: H
authors.lastname: Hyakusoku
authors.forename: M
authors.initials: M
authors.lastname: Kawamoto
authors.forename: S
authors.initials: S
authors.lastname: Kawana
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006393:Hemangiopericytoma / Q000473:pathology* / Q000601:surgery*; D006801:Humans; D008297:Male; D016896:Treatment Outcome