<unk>  <unk>  is a type of soft tissue vascular sarcoma that originates in the pericytes in the walls of capillaries. Typically,<unk> s have large vessels especially located at its periphery, and commonly involve the lower limbs (35% of cases), especially the thigh, pelvis, and retroperitoneum (25%).<unk>  was first described by Arthur Purdy Stout and Margaret Ransone Murray, two American pathologists, in 1942. mThe NF2 gene mutation has been associated with the development of<unk> . 
If left untreated, the majority of patients with<unk>  may progress to develop bone invasion.  On MRI is the imaging modality of choice for<unk> . On MRI, characteristic findings of<unk> , include: solitary fibrous tumor, demonstrates a deep soft-tissue mass, and heterogenous high signal intensity on coronal STIR imaging.  Surgery is the mainstay of therapy for<unk> . Arterial preoperative embolisation is highly recommended to avoid bleeding among patients with<unk> .
Hemangiopericytoma
Oligoastrocytoma
Astrocytoma
Hemangioblastoma
Schwannoma
Ameloblastoma
Cavernous angioma
Meningioma