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目的:分析表皮样囊肿的CT表现并提高其诊断准确性。材料与方法:11例患者,其中,男性6例,女性5例,年龄介于25～65岁,均经采用GE1600C型扫描仪以OM为基线横断扫描,于平扫后行增强扫描。结果:11例患者的病灶均呈囊性低密度,其中,圆形病灶见于3例,扁平不规则形且境界欠清的病灶见于8例。后者中,1例的病灶位于枕大池,压迫四脑室并引起幕上脑积水。1例的病灶位于鞍上池及环池。其余患者的病灶均位于桥小脑角池且有沿蛛网膜下腔生长的趋势。结论:只要掌握表皮样囊肿的上述CT表现,便容易将其与蛛网膜囊肿,皮样囊肿,以及颅内其他囊性肿块相鉴别。
Objective: To analyze the CT findings of epidermoid cysts and improve their diagnostic accuracy. Materials and Methods: Eleven patients, including 6 males and 5 females, aged from 25 to 65 years old, had been scanned by using the GE1600C scanner with OM as the baseline transthoracic scan. Results: The lesions of 11 patients showed cystic low density. Among them, 3 cases were found with round lesions, and 8 cases were found with flat irregular shape and lack of realm. The latter, 1 case of lesions located in the pillow pool, oppression of the fourth ventricle and cause supratentorial hydrocephalus. One case of the lesion was located in the suprasellar and cistern. The rest of the patients had lesions that were located in the cerebellopontine pool and had a tendency to grow along the subarachnoid space. CONCLUSIONS: As long as the epidermoid cyst is mastered by CT, it is easy to distinguish it from arachnoid cysts, dermoid cysts, and other intracranial cystic masses.