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目的通过分析鼻咽癌放疗后复发的CT资料,提高对鼻咽癌放疗后复发CT征象的认识。方法回顾性分析34例NPC放疗后复发患者的CT表现,病例均经病理或CT随访确诊。结果①鼻咽局部复发咽隐窝变浅或消失,咽旁间隙变小31例,其中12例伴有颅底骨质破坏。②颅底骨质破坏:出现新发不同程度颅底骨质破坏12例。③区域淋巴结肿大:出现新发区域淋巴结肿大28例。结论鼻咽癌放疗后复发一般表现为:①局部复发。②上行性复发,主要表现为颅底骨质破坏。③区域淋巴结肿大。肿瘤复发应与放疗后纤维化相鉴别,此时,动态观察对于鉴别诊断具有重要意义。
Objective To analyze the CT data of recurrence of nasopharyngeal carcinoma (NPC) after radiotherapy and to improve the understanding of CT signs of recurrent nasopharyngeal carcinoma after radiotherapy. Methods The CT findings of 34 NPC patients with recurrent NPC after radiotherapy were retrospectively analyzed. All the cases were confirmed by pathology or CT follow-up. Results ① Nasopharyngeal recurrent pharyngeal recess shallow or disappeared, the parapharyngeal space becomes smaller in 31 cases, of which 12 cases associated with skull base bone destruction. ② skull base bone destruction: there are new cases of different degrees of skull base bone destruction in 12 cases. Â ’¢ regional lymph nodes: the emergence of newly diagnosed regional lymph nodes in 28 cases. Conclusion The recurrence of nasopharyngeal carcinoma after radiotherapy generally showed as: ① local recurrence. ② recurrence, the main performance of skull base bone destruction. Regional lymph nodes. Tumor recurrence should be differentiated from fibrosis after radiotherapy. At this time, dynamic observation is of great significance for the differential diagnosis.