Meningeal hemangiopericytoma.

If meningeal hemangiopericytoma could be diagnosed prior to operation, the neurosurgeon might be better prepared to deal with excessive bleeding during the operation. This type of tumor should be completely excised because of the high risk of recurrence and remote metastasis. Computed tomography as well as cerebral angiography would aid in the preoperative diagnosis of hemangiopericytoma. Early detection and periodic observation by computed tomography may minimize the morbidity and mortality associated with late detection.