Sellar and Suprasellar Anaplastic Hemangiopericytoma in a 34-Year Old Man

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Central nervous system hemangiopericytomas are rare, representing <1% of all primary central nervous system tumors. Hemangiopericytomas of the sellar region are exceptionally rare. Here we present a case of a sellar/suprasellar anaplastic hemangiopericytoma. The patient is a 34 year old man with a history of a resected pituitary tumor, diagnosed as a pituitary adenoma per the patient, who presented with bitemporal hemianopsia. Radiology revealed a 3.7 cm enhancing sellar/suprasellar mass with local mass effect, consistent with a pituitary adenoma. On resection, the mass was diagnosed as anaplastic hemangiopericytoma, WHO grade III. The patient experienced residual tumor with two further resections before expiring of a pulmonary embolus seven months later. There are only 10 previously documented cases of sellar/suprasellar hemangiopericytoma in the English-speaking world literature. This is the third case of anaplastic hemangiopericytoma in this region. These cases should be recorded until meaningful conclusions about therapy and prognosis can be established.

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