title: Orbital and intracranial haemangiopericytoma. Case report with a short review.
abstract: A case of haemangiopericytoma (HPC) in a 50-year-old male occurring in the orbit and the adjoining anterior and middle cranial fossa, studied by ultrasound, angiography and computed tomographic scans, is presented. A short review of the radiological features is given. This is the first case of this rare tumor studied by all the three aforementioned radiodiagnostic modalities; and one of the few reports of its computed tomographic (CT) appearances in the literature. The marked and persistent enhancement of this tumour with the polycyclic nature of its well-defined margins as seen on CT is emphasized. It is suggested that dynamic scanning may assist in differentiating this tumour from meningioma with which it is often confused.
authors.affiliation: Department of Radiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
authors.forename: T M
authors.initials: TM
authors.lastname: Kolawole
authors.forename: P J
authors.initials: PJ
authors.lastname: Patel
authors.forename: Y
authors.initials: Y
authors.lastname: Boshra
authors.lastname: N-Ur-Rahman
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D006393:Hemangiopericytoma / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis; D008579:Meningioma / Q000175:diagnosis; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography