Haemangiopericytoma of the Nasal Cavity

Haemangiopericytoma, first described by Stout and Murray in 1942, is a rare vascular tumour, related to the glomus tumour, in which the proliferating cell is the pericyte of Zimmerman, situated in the capillary wall outside the reliculin sheath. This position distinguishes the pericyte from endothelial cells in the capillary wall. Haemangiopericytoma lacks the organoid formation of the glomus tumour. In accordance with its tissue of origin, the tumour may occur in widespread parts of the body. However, it is most commonly found in the musculo-skeletal system and skin. Fewer than 10 cases have been reported in the nasal cavity, and the following case is reported because of its rarity in this site.