Infantile hemangiopericytoma--case report and literature review.
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.
Futagami
A
A
Department of Dermatology, Nippon Medical School, Tokyo, Japan. aya-f@nms.ac.jp
Aoki
M
M
Iwakiri
I
I
Hyakusoku
H
H
Kawamoto
M
M
Kawana
S
S
D003937:Diagnosis, Differential; D005260:Female; D006393:Hemangiopericytoma / Q000473:pathology* / Q000601:surgery*; D006801:Humans; D008297:Male; D016896:Treatment Outcome