Fujimoto H, Murakami K, Kashimada A, Terauchi M, Ozawa K, Nosaka K, Arimizu N
Department of Radiology, Numazu City Hospital, Japan.
Clin Imaging. 1993 Apr-Jun;17(2):146-8. doi: 10.1016/0899-7071(93)90056-s.
A large subcutaneous mass was noted in the buttock of a 79-year-old man. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a thin-walled cystic mass that involved the ischiorectal fossa. The content appeared hyperintense on T1-weighted images. T2-weighted images demonstrated a considerable amount of debris. At surgery an epidermal cyst with markedly keratinized squamous epithelium was found. It contained much keratin and cholesterin.
一名79岁男性的臀部发现一个较大的皮下肿物。计算机断层扫描（CT）和磁共振成像（MRI）显示一个薄壁囊性肿物，累及坐骨直肠窝。其内容物在T1加权图像上呈高信号。T2加权图像显示有大量碎屑。手术中发现一个表皮样囊肿，内衬明显角化的鳞状上皮。囊肿内含有大量角蛋白和胆固醇。
