血管外皮细胞瘤(Hemangiopericytoma)为起源于血管周围细胞或外皮细胞的肿瘤。一般良性的称为血管外皮细胞瘤,恶性的称为血管外皮肉瘤;但有时在病理形态上难以分辨,故也有笼统称为血管外皮细胞瘤者。血管外皮细胞瘤可发生于身体的任何部位,而以腹膜后,肢端,眼眶及颅腔内多见,发生于鼻腔及鼻副窦者国内外均甚少见,省内则尚未见报道。本文报导鼻腔及鼻副窦血管外皮细胞瘤一例,并对其临床表现,病理组织特点,超微结构改变、处理及预后试作初步讨论,藉供参考。 Hemangiopericytoma is a tumor that originates from perivascular or endothelial cells. Generally known as benign hemangiopericytoma, malignant known as vascular sarcoma; but sometimes difficult to distinguish the pathological form, it is also generally known as hemangiopericytoma. Hemangiopericytoma can occur in any part of the body, and to the retroperitoneal, extremity, orbit and cranial cavity more common in the nasal and nasal sinus are rare at home and abroad, the province has not yet been reported. This article reports a case of nasal and nasal sinusoidal hemangiopericytoma, and preliminary discussion on its clinical manifestations, pathological features, ultrastructural changes, treatment and prognosis, for reference.