本文根据病理证实的11例头颈部肿瘤,提出肿瘤侵犯鼻咽部和其咽旁软组织的各种CT表现,包括鼻咽腔侧壁标志的消失、突入鼻咽腔内的肿瘤阴影、咽旁间隙的移位,变小或消失、咽旁肌肉分界不清及邻近骨质破坏等,并能精确地显示病变侵犯的范围。这些对术前制定治疗计划和放射治疗可提供有价值的临床资料。 In this paper, according to pathologically confirmed 11 cases of head and neck cancer, the CT appearances of the tumor invasion of nasopharyngeal and its parapharyngeal soft tissue were proposed, including the disappearance of the nasopharyngeal lateral wall landmarks, tumor shadows protruding into the nasopharyngeal cavity, parapharyngeal side Displacement of the gap, smaller or disappeared, unclear borders of the parapharyngeal muscles and destruction of adjacent bones, etc., and can accurately show the extent of lesion invasion. These can provide valuable clinical data for preoperative planning and radiotherapy.