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颅内脂肪瘤较少见,多位于中线附近,生长缓慢,临床症状较少,主要根据其好发部位和典型的CT特征作出诊断。本文报告二例,并结合文献进行讨论。例1 女,51岁。因头痛,步态不稳2年入院。既往有高血压病史。检查:双下肢轻度肌萎缩,肌力Ⅳ级,步态不稳,指鼻试验左侧不准,跟膝胫试验两侧均不稳,轮替试验左侧明显障碍,趾背伸试验双侧均差。CT造影扫描于枕骨大孔左后方显示2×1cm 椭圆形低密度影,CT值-93HU,脑干向右前移位,枕骨大孔未见骨质破坏,提示“枕骨大孔区囊肿”。坐位全麻下经左枕下旁正中入路行枕大孔区肿瘤切除术。术中见枕大池蛛网膜增厚,有淡黄色
Intracranial lipoma is rare, and more in the vicinity of the midline, slow growth, less clinical symptoms, mainly based on its predilection sites and typical CT features make a diagnosis. This article reports two cases and discusses them in combination with the literature. Example 1 Female, 51 years old. Due to headache, unsteady gait 2 years admitted. Past history of hypertension. Check: mild lower extremity muscle atrophy, muscle strength grade Ⅳ, gait instability, the left finger nose test is not allowed, both sides with the knee shin test instability, the left rotation test obvious obstacles, toe dorsiflexion test double Side of the poor. CT angiography in the left posterior foramen magnum showed 2 × 1cm oval low density, CT value -93HU, the right front brain stem shift, foramen magnum no bone destruction, suggesting that “foramen magnum cyst.” Sitting under general anesthesia via the left suboccipital approach to the middle of the line to accept macular hole tumor resection. Ocular occipital see intraocular arachnoid thickening, pale yellow