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引用次数: 0
颞肌纯肌内巨大表皮样囊肿
一位18岁的女性表现为右侧颞区肿胀,在几年的时间里逐渐增加。无外伤史,病变无触痛、柔软、不可压缩、不附着于皮肤,大小约109cm,无透光。肿胀处的皮肤正常,当患者咬紧牙关时,病变变得稍微不那么突出,表明可能在颞筋膜以下。磁共振成像(MRI)扫描显示在颞肌实质内有一个界限清晰的T2高信号和T1低信号病变。1 a - c)。颅底正常,病变无颅内延伸。对比剂的使用没有增强。病变在弥散加权成像(DWI)序列上有扩散限制(►图。1 d)。病人在全身麻醉下切除病变。术中病变位于变薄的右侧颞肌实质内,并在打开颞肌筋膜后进入。1 e)。它有一个坚固的胶囊,被打开,像牙膏一样的奶酪状物质和一缕缕头发被从病变内部一点点地移除。1 f)。然后很容易地将囊肿壁与肌纤维分离,并通过关闭颞筋膜实现完全切除。1 g)。组织病理学报告为表皮样囊肿。她的术后过程很顺利。
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