Oguchi N, Kawamura H, Ohara T, Matsuda T
Department of Urology, Kansai Medical University.
Hinyokika Kiyo. 1998 Oct;44(10):747-9.
A 21-year-old man was admitted with a painless mass in the left testis. Physical examination revealed a firm, small-finger sized, mass lesion with a smooth surface in the left testis. The ultrasonographic appearance was a hypoechoic lesion with an echogenic rim in the left testis. Magnetic resonance imaging (MRI) findings showed the echogenic rim to be a low-signal zone on both T1 and T2-weighted images. The center, on T2-weighted images, had a low signal intensity, with peripheral high signal intensity. Under a preoperative diagnosis of epidermoid cyst, the mass was resected surgically with preservation of the testis. Histopathological diagnosis confirmed an epidermoid cyst. Preoperative ultrasonographic and MRI findings suggested a benign lesion, thus permitting preservation of the testis.
一名21岁男性因左侧睾丸无痛性肿块入院。体格检查发现左侧睾丸有一个质地坚硬、小手指大小、表面光滑的肿块病变。超声检查显示左侧睾丸为低回声病变，周边有回声带。磁共振成像（MRI）结果显示，在T1加权和T2加权图像上，回声带均为低信号区。在T2加权图像上，病变中心信号强度低，周边信号强度高。术前诊断为表皮样囊肿，遂行保留睾丸的手术切除肿块。组织病理学诊断证实为表皮样囊肿。术前超声和MRI检查结果提示为良性病变，因此得以保留睾丸。
