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目的 提高对鼻咽癌复发的认识，回顾50例鼻咽癌复发的CT影像资料及临床资料，把鼻咽癌复发的CT诊断因素分为病灶区域的变化、病灶密度的变化以及颅神经受损的变化：分析其变化的原因，并把病灶的区域变化划分分原灶的复发、边缘性灶的复发和异灶的复发；了解区域复发的机率性；而病灶密度的变化主要是与放疗后纤维化肿块的相互区别。通过分析，对鼻咽癌复发的诊断，单因素一般较难，要综合上述因素分析，并结合临床，才能提高诊断率。
Objective To improve the knowledge of recurrence of nasopharyngeal carcinoma and to review the CT image data and clinical data of 50 cases of nasopharyngeal carcinoma recurrence. The CT diagnostic factors of recurrent nasopharyngeal carcinoma were divided into the changes of lesion area, the change of lesion density and the damage of cranial nerves Of the changes: analysis of the reasons for the change, and the lesions of the regional division of the division of the recurrence of the original stove, the recurrence of marginal stove and the recurrence of heterotopic; understanding of the regional recurrence of the probability; and the focus of the change is mainly with the radiation after radiotherapy Differentiation of fibrosis lumps. Through analysis, the diagnosis of recurrence of nasopharyngeal carcinoma, single factor is generally more difficult to comprehensive analysis of these factors, combined with clinical, can improve the diagnostic rate.