title: Congenital malignant hemangiopericytoma.
mesh_terms: D001132:Arm; D006393:Hemangiopericytoma / Q000151:congenital* / Q000473:pathology; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009132:Muscles / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000151:congenital* / Q000473:pathology