脑胶质瘤术后不同时期CT随访研究

Postoperative CT follow up study of brain glioma

目的 :研究脑胶质瘤术后不同时期CT表现 ,旨在提高术后CT诊断水平。方法 :随访 40例经手术病理证实的脑胶质瘤术后患者 ,术后不同时期进行CT扫描。结果 :肿瘤残存 10例 ( 2 5 % ) ,术后 2～ 5天内呈结节状、块状、环状强化 ,强化环不规则 ,厚薄不均 ;1周～ 3个月内术区残腔边缘呈“正常”反应性环状强化 2 0例 ( 5 5 6 % ) ,强化环厚薄均匀 ,光滑整齐或不规则 ;3个月后术区边缘或远处肿瘤复发 12例 ( 3 0 % ) ,呈结节状、环状、不规则团块状强化 ,大部分“正常”反应性环状强化消失 ,残存肿瘤随时间的延长而增大。结论

Objective:To study the CT manifestations of brain glioma at different stages after operation.Methods:40 cases of patients with brain gliomas verified by operation and pathology were followed up and CT scanning were done at different stages postoperatively.Results:There were 10 cases (25%) with tumor remnants,CT showed nodular,lump or ring form enhancement within 2～5 days postoperatively.The enhancement ring was irregular and uneven in thickness.There were 20 cases (55 6%) with “normal”reaction ring enhancement at the borders of residual cavity over operative area within 1～3 months postoperatively.The enhancement rings mostly were thin,smooth,integral or irregular. 3 months postoperatively,there were 12 cases (30%) showed tumor recurrence at the site of operation or at remote region.CT showed nodular,ring form or irregular enhancement.Most of “normal” reaction ring enhancement disappeared.The tumor remnants increased in size as time went on.Conclusion:CT scanning is an effective means in follow up survey of brain glioma postoperatively.