Kondo T, Tsubokawa T, Goto T, Sugawara T, Hayashi N, Moriyasu N
No Shinkei Geka. 1978 Jul;6(7):715-22.
Two cases with epidermoid and one case with dermoid in the 4th ventricle were treated in our clinic during the last one year. The clinical findings in these three cases were described, and dermoid and epidermoid tumors in the 4th ventricle were discussed dealing with the incidence and the characteristic features of the findings in CT scanning. The correct diagnosis of both epidermoid and dermoid in the 4th ventricle was done by CT-scanning which showed an irregular low density area of EMI No. -4 approximately 12 in the posterior fossa without any contrast media enhancement. The low density lesion could be differentiated by both angiogram and ventriculogram from arachnoid cyst, ependymoma, cystic astrocytoma and cystic hemangioblastoma in the 4th ventricle. Total removal of the tumor was performed on 2 cases, and a part of the tumor capsule attached to the medulla oblongata was left in the other case. All patients returned to their own job after operation.
在过去一年里，我们诊所治疗了4例第四脑室表皮样囊肿患者和1例皮样囊肿患者。描述了这3例患者的临床表现，并结合第四脑室皮样囊肿和表皮样囊肿的发病率及CT扫描表现特征进行了讨论。通过CT扫描对第四脑室表皮样囊肿和皮样囊肿做出了正确诊断，扫描显示后颅窝有一个不规则低密度区，EMI编号约为12，增强扫描无造影剂强化。通过血管造影和脑室造影，可将该低密度病变与第四脑室蛛网膜囊肿、室管膜瘤、囊性星形细胞瘤和囊性血管母细胞瘤相鉴别。2例患者的肿瘤被完全切除，另1例患者的部分肿瘤包膜附着于延髓，予以保留。所有患者术后均恢复工作。
