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本文报告了经手术及病理证实的10例松果体肿瘤,其中包括生殖细胞瘤5例,畸胎瘤1例,恶性畸胎瘤3例及松果体母细胞瘤1例,并对松果体瘤的 CT 诊断进行了评价。生殖细胞瘤在平扫时为第三脑室后部等密度或稍高密度肿块,增强后可见均匀增强,边界清楚,有时增强后见小囊状低密度区,四叠体池消失,均未见钙化。畸胎瘤表现为边界清楚多种密度之囊性肿块,低密度区代表脂肪组织,其中可见长条状钙化,等密度区为肿瘤之实质部分。造影增强后等密度区可强化,边界规整。恶性畸胎瘤表现为等低混杂密度,有的可见钙化,边界不清,呈不均匀增强,低密度区不增强。从松果体细胞起源的肿瘤可见异常的钙化及等密度肿块,边界不规则,不均匀增强。作者认为根据病变所在部位,CT 表现,结合临床性别,年龄等,做出肿瘤之病理分类是可能的。
This article reports 10 cases of pineal tumors confirmed by surgery and pathology, including 5 cases of germ cell tumor, 1 case of teratoma, 3 cases of malignant teratoma and 1 case of pinealoblastoma. CT diagnosis of somatic tumors was evaluated. Germ cell tumors in the plain scan for the third ventricle at the same density or slightly higher density of lumps, increased uniform enhancement can be seen, the boundary clear, and sometimes enhanced to see the small cystic low density area, quadrigeminal pool disappear, were not seen Calcification. Teratoma showed clear boundaries of a variety of density of cystic mass, low density area on behalf of fat tissue, which can be seen long strip of calcification, isopycnic area as the substantial part of the tumor. After contrast enhanced density zone can be strengthened, the frontier. Malignant teratoma showed low mixed density, and some visible calcification, the boundary is unclear, was unevenly enhanced, low-density area is not enhanced. Tumors originating from pineal somatic cells showed abnormal calcifications and isodense masses with irregular and uneven inhomogeneity. The authors believe that it is possible to classify the pathology of the tumor based on the location of the lesion, CT findings, clinical gender, age, and the like.