报道５例鼻咽癌放射治疗所引起的后遗症一蝶窦病变。其潜伏期长达８～１４年；临床主要表现为复视、头痛；视力下降发展到视神经萎缩。出现岩尖综合征１例，周围性面瘫１例。经二种途径三种术式治疗后，效果良好。病检报告为潴留囊肿２例，肉芽增生２例，骨坏死并坏死组织潴留１例。 Reported 5 cases of sphenoid sinus disease caused by radiotherapy of nasopharyngeal carcinoma. The incubation period is as long as 8 to 14 years; the main clinical manifestations are diplopia and headache; visual acuity develops to optic nerve atrophy. Rock tip syndrome occurred in 1 case and peripheral facial paralysis occurred in 1 case. After two kinds of surgical treatment of two ways, the effect is good. The disease report included retention cyst in 2 cases, granulation hyperplasia in 2 cases, bone necrosis and necrotic tissue retention in 1 case.