A Case of Sinonasal-type Hemangiopericytoma Resected with Endoscopic Sinus Surgery

We report herein on a 75-year-old woman with sinonasal-type hemangiopericytoma (HPC). She complained of nasal bleeding and a nasal tumor originated from the left nasal septum was found. It was successfully resected using endoscopic sinus surgery without preoperative embolization, because we were uncertain of its feeding artery. Its pathological examination gave a diagnosis of sinonasal-type of HPC. The sinonasal-type HPC is a rare benign sinonasal tumor, but WHO has classified it as a borderline malignancy, because it may have multiple relapses. Our patient remained free of relapse 36 months after the treatment.