鼻咽癌放疗后CT分析

CT Analysis in Nasopharyngeal Carcinoma after Radiotherapy

目的提高对鼻咽癌(NPC)放疗后改变的认识。方法对经临床影像追踪或病理活检证实的NPC放疗后复发53例及无复发65例的CT表现进行详细分析。结果放疗后复发组53例中,鼻咽壁增厚/肿块28例,茎内增厚致密40例,颅底侵犯24例;无复发组65例中,鼻咽壁增厚35例,鼻咽壁肿块5例,茎内增厚致密18例,颅底残留骨质破坏6例。经统计学处理,对于茎内增厚致密,复发组与无复发组之间有显著性差异(P<0.05);而在鼻咽壁增厚/肿块方面,两组之间则无显著性差异(P>0.05)。结论CT可较好地显示NPC放疗后变化,茎内改变是判断复发与否的重要征象。

Objective To improve the recognization of nasopharyngeal carcinoma （NPC） after radiotherapy. Methods CT imaging of 53 patients of recurrence and 65 patients of non-recurrence confirmed by followedup or pathology in NPC after radiotherapy were analyzed in details. Results In the 53 Cases recurrence, nasopharyngeal wall thicken / lump （n=28）, medial soft tissue of styloid process （MSTSP） thicken and compact（n=40）, skull base invaded （n=24）. In the 65 cases non-recurrent, nasopharyngeal wall thicken（n=35）, nasopharyngeal wall lump （n=5）, MSTSP thicken and compact （n=18）, skull base residues encroached （n=6）. There was significant difference between the non-recurrent and the recurrence in the thicken and compact of the MSTSP （P〈0.05）, and there was no significant difference in the nasopharyngeal wall thicken/lump （P〉0.05）. Conclusion CT can show the changes in NPC after radiotherapy, the change of MSTSP is important to decide whether or not the turnout has recurred.