HEMANGIOPERICYTOMA is a rare vascular tumor first described by Murray and Stout in 1942.1 More than 300 cases have been reported in the literature of which only five have been described as primary nasal tumors. This tumor is usually present as a painless mass in the trunk or extremities, but may be found in any location. The incidence of head and neck involvement is significant. O'Brien2 reported seven out of 24 cases in this area and Stout and Murray,1 six out of 34 cases. Hemangiopericytoma may occur at any age, but it is most common in the middle decades. No predominance has been noted in either sex.
The tumor is derived from the pericyte which was first described by Zimmerman in 1923. The pericyte is normally found in the outer surface of capillary walls where it acts to change the caliber of the lumen.1 It arises
Lenczyk JM. Nasal Hemangiopericytoma. Arch Otolaryngol. 1968;87(5):536–539. doi:10.1001/archotol.1968.00760060538019
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