鼻咽癌放疗后茎内改变的CT观察

目的加深对鼻咽癌放疗后茎内异常改变的认识。方法鼻咽癌放疗后茎内改变者39例,均做鼻咽轴位CT平扫,详细对比观察复发与未复发者茎内CT表现。结果鼻咽癌放疗后复发者均表现为茎内增厚致密,而无复发者仅37.04%(10/27)表现为茎内增厚致密。在茎内增厚致密者中,复发病例边缘微凸者9例,平直3例;而无复发病例边缘平直者7例,微凹3例,无1例边缘突出者。上述经统计学处理,均有显著性差异(Ρ<0.05)。结论鼻咽癌放疗后茎内增厚致密提示局部复发,若边缘微凸,则复发的可能性更大。

CT Observation of the Medial Soft Tissue of Styloid Process in Nasopharyngeal Carcinoma after Radiotherapy

Objective To improve the cognition of abnormal changes of the medial soft tissue of styloid process (MSTSP) in nasopharyngeal carcinoma after radiotherapy. Methods CT scans of nasopharynx in 39 cases with NPC that had change at the MSTSP in NPC after radiotherapy were performed.CT findings of recurrence and non-recurrence at MSTSP were studied and compared carefully.Results In the recurrence cases, the MSTSP was thickening and compactness in all cases, in the non-recurrence cases ,only 37.04% (10/27) were thickening and compactness at MSTSP. In all the cases which had thickening and compactness of the MSTSP, the borders were slightly protruding in 9 cases and the borders were straight in 3 cases in the recurrence cases, while the borders were straight in 7 cases and the borders were slightly hollow in 3 cases,and there wasn't any case appeared as protruding of borders in the non-recurrence cases. All the cases were dealt with statistic methods and had remarkable difference between them(P<0.05). Conclusion The thickening and compactness of the MSTSP in NPC after radiotherapy suggests local recurrence of tumors,and if the border is slightly protruding,there is great probability of recurrence.