鼻咽血管纤维瘤是一种原因尚未明确的良性肿瘤,虽可发生于2～79岁的不同年龄,但绝大多数发生于未成年阶段的男性。因为肿瘤不能自行退缩以至达到痊愈,应采用手术治疗。手术治疗的困难主要是进路和出血问题,特别是对较大或巨大肿瘤,如果术前未能判明其原发部位及扩展范围,要减少术中出血量便很困难。CT检查能够很好地确定其部位及范围:例如有翼上颌窝侵犯者,能够清楚显示翼腭裂增宽和上颌窦后壁 Nasopharyngeal angiofibroma is a benign tumor that has not yet been clarified. Although it can occur at different ages from 2 to 79 years old, the majority of the cases occur in men of immature age. Because the tumor cannot retreat on its own and heal, it should be treated with surgery. The difficulty in surgical treatment is mainly due to access and bleeding problems, especially for larger or large tumors. If the primary site and extension range cannot be identified before surgery, it is very difficult to reduce the amount of intraoperative blood loss. The CT examination can be used to determine the location and extent of the lesion. For example, a winged maxillofacial invader can clearly show the widening of the pterygopalatine cleft and the maxillary sinus posterior wall.