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颅内皮样囊肿是一种少见的先天性良性肿瘤,其临床表现取决于病灶的位置、大小、生长速度、有无破裂与感染等,无特征性症状/体征。典型的皮样囊肿在CT上表现为边界清楚的低密度影,CT值多为负值,周围水肿缺如,在MRI上,T1、T2加权以高信号为主,囊肿多不被增强,而囊壁可有条索状强化。确诊需行病理学检查。治疗首选开颅显微镜下手术切除。大多数患者预后良好,但也可复发、恶变、并发无菌性脑膜炎和脑积水,所有患者都应长期随访。
Intracranial cyst is a rare congenital benign tumor whose clinical manifestations depend on the location of the lesion, size, growth rate, presence or absence of rupture and infection, and no characteristic signs / symptoms. A typical dermoid cyst appears as a clear low-density border on CT with negative values of CT and absence of peripheral edema. On MRI, T1 and T2 are weighted mainly by high signal and cyst is not enhanced much, Wall may have bar-like enhancement. Confirmed to be pathological examination. The preferred surgical craniotomy for surgical resection. Most patients with good prognosis, but also relapse, malignant transformation, complicated by aseptic meningitis and hydrocephalus, all patients should be long-term follow-up.