Akahoshi Minami, Yanaka Kiyoyuki, Watanabe Daisuke, Nakamura Kazuhiro, Zaboronok Alexander, Ishikawa Eiichi, Matsumura Akira
Department of Neurosurgery, Tsukuba Memorial Hospital, 1187-299 Kaname, Tsukuba, Ibaraki, 300-2622 Japan.
Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tenodai, Tsukuba, Ibaraki, 305-8575 Japan.
Radiol Case Rep. 2018 Sep 13;13(6):1133-1136. doi: 10.1016/j.radcr.2018.07.022. eCollection 2018 Dec.
Intracranial epidermoids are rare lesions accounting for 0.2%-1.8% of all intracranial tumors. They commonly develop in the cerebellopontine angle and the parasellar region and can appear with atypical neuroimaging features due to intracystic hemorrhages which complicate diagnosis. The authors present a case of a 62-year-old woman with a frontal epidermoid cyst with a hemorrhage and tumor growth. A series of atypical radiological findings showed gradual changes in the lesion appearance that were confirmed with surgery and histopathology. To avoid surgical complications such as chemical meningitis, it is important to remember that epidermoid cysts occasionally bleed, leading to atypical MRI and/or CT findings and diagnostic difficulties. Development of epidermoid cysts in atypical locations in the brain may result in challenges to accurate diagnosis.
颅内表皮样囊肿是罕见病变，占所有颅内肿瘤的0.2%-1.8%。它们通常发生在桥小脑角和鞍旁区域，由于囊内出血可出现非典型神经影像学特征，这使诊断变得复杂。作者报告了一例62岁女性，患有额叶表皮样囊肿并伴有出血和肿瘤生长。一系列非典型放射学表现显示病变外观逐渐变化，手术及组织病理学检查证实了这一点。为避免手术并发症如化学性脑膜炎，必须记住表皮样囊肿偶尔会出血，导致非典型的MRI和/或CT表现以及诊断困难。脑内非典型部位的表皮样囊肿形成可能给准确诊断带来挑战。
