Abstract
A 75-year-old man without nasal symptoms was found to have nasal septum hemangiopericytoma with sphenoid sinusitis. Tumor resection was performed using an endonasal scope. Histopathologically, the tumor showed no evidence of malignancy, including mitoses or atypia nuclei. Therefore, chemotherapy and radiotherapy were not undertaken after the surgery. There has been no recurrence in this case for one year.