本文分析研究了79例经组织学检查证实为鼻咽癌的CT 扫描所见。鼻咽癌发生早期吞咽,肌粘膜下侵犯并有提腭肌肿大及咽旁间隙消失或移位。肿瘤堵塞耳咽管后可并发浆液性中耳炎。常见的CT 改变有咽隐窝消失及鼻咽腔气道壁隆凸性肿块。由于鼻咽癌常经破裂孔侵至颅内,CT 扫描可确切显示颅底破坏的部位、范围,并可了解鼻窦及眼眶受累情况。 This article analyzed 79 cases of histological examination confirmed by CT scan of nasopharyngeal carcinoma. Nasopharyngeal cancer occurred early swallowing, muscle submucosal invasion and lifting of diaphragmatic muscles and parapharyngeal space disappeared or displaced. Tumor obstruction after the eustachian tube can be complicated by serous otitis media. The common CT changes are the disappearance of pharyngeal crypts and the hyperplastic nasopharynx airway wall mass. Because nasopharyngeal carcinoma often invades into the brain through the ruptured hole, the CT scan can accurately show the location and extent of the destruction of the skull base, and can understand the sinus and eyelid involvement.