Shinoyama Mizuya, Kajiwara Koji, Harada Katsumi, Ideguchi Makoto, Akimura Tatsuo, Nishizaki Takafumi, Suzuki Michiyasu
Department of Neurosurgery, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan.
No Shinkei Geka. 2002 Nov;30(11):1197-201.
A 22-year-old woman was admitted to our department after developing a headache. The neurological findings were unremarkable on her first visit, but CT demonstrated a lot of low-density masses in the subarachnoid space. The largest mass was in the right sylvian fissure. These lesions appeared hyper-intense in T1, T2 and diffusion-weighted MR images. A right frontotemporal craniotomy was performed to remove the main mass lesion in the right sylvian fissure. During surgery, thickening of the arachnoid membrane and floating oily globules were seen in the subarachnoid space. The histopathological examination revealed that the tumor was a dermoid cyst. Follow-up MRI revealed that some of the small lesions had moved since the operation. These findings suggested that the tumor was a ruptured dermoid cyst. The patient's postoperative course was uneventful and her headache disappeared completely.
一名22岁女性在出现头痛后被收入我院。首次就诊时神经系统检查无明显异常，但CT显示蛛网膜下腔有许多低密度肿块。最大的肿块位于右侧外侧裂。这些病变在T1、T2和扩散加权磁共振图像上呈高信号。行右额颞开颅手术以切除右侧外侧裂的主要肿块病变。手术中，在蛛网膜下腔可见蛛网膜增厚和漂浮的油滴。组织病理学检查显示肿瘤为皮样囊肿。随访磁共振成像显示，自手术后一些小病变发生了移位。这些发现提示肿瘤为破裂的皮样囊肿。患者术后恢复顺利，头痛完全消失。
