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脑肿瘤全切除后的非肿瘤性增强与肿瘤残存和复发所致的增强鉴别诊断较困难。作者分析了16例幕上肿瘤(胶质瘤15例,转移瘤1例)。胶质瘤病人均接受20～60Gy放射治疗;年龄1岁～68岁。术后均有2次以上扫描(包括增强扫描)。观察内容包括肿瘤切除部位的增强形态随时间的变化,在随访中,增强效应消失者为非肿瘤性增强;不消失、范围倾向于增大者为肿瘤性增强。形态特征包括肿瘤切除部位增强区的厚度、增强区与邻近脑实质的界限是否清楚。以>3mm倾向为肿瘤性增强;将同层面大脑镰的边缘作参考,判定增强区的界限是否清楚。结果见到,8例非肿瘤性增强中,4例增强效应持续超过4个月,最长32.7个月。6例增强厚度
Tumor resection after non-tumor enhancement and residual tumor recurrence and enhanced differential diagnosis is more difficult. The authors analyzed 16 cases of supratentorial tumors (glioma in 15 cases, 1 case of metastatic tumor). Patients with gliomas received 20 ~ 60Gy radiotherapy; aged 1 to 68 years old. After surgery, there were more than 2 scans (including enhanced scan). The observation included the enhanced morphological changes of tumor resection site with time. During the follow-up, those with disappearance of enhancement effect were non-neoplastic enhancement; those disappeared and the range was more likely to be neoplastic enhancement. Morphological features include tumor excision site enhancement zone thickness, enhancement zone and the adjacent brain parenchyma boundaries are clear. With> 3mm tendency for tumor enhancement; the same level of falx sickle edge as a reference to determine the boundaries of enhanced area is clear. The results showed that, in 8 cases of non-neoplastic enhancement, 4 cases of enhancement lasting more than 4 months, up to 32.7 months. 6 cases to enhance the thickness