Cittadini Giuseppe, Gauglio Cristina, Pretolesi Fabio, Santacroce Elena, Derchi Lorenzo E
Radiologia-DICMI, University of Genoa, Largo R. Benzi, 8, I-16132 Genoa, Italy.
J Clin Ultrasound. 2004 Sep;32(7):370-2. doi: 10.1002/jcu.20047.
Epidermoid cysts of the testis are rare benign lesions, without malignant potential, that can be managed conservatively with cyst enucleation and testis-sparing surgery. Bilateral epidermoid cysts in the testes have been reported very infrequently. We report the sonographic and MRI findings in a patient who presented with a palpable nodule in only 1 testis, but in whom sonography showed bilateral lesions. On sonography, the cysts had an internal "onion-ring" structure; color Doppler signals were absent. On MRI, the cysts had a laminated appearance, with alternating low- and high-signal-intensity areas on T2-weighted images. These imaging findings and the negative results of laboratory tests for tumor markers suggested the correct diagnosis, and testis-sparing surgery could be performed.
睾丸表皮样囊肿是罕见的良性病变，无恶变潜能，可通过囊肿摘除术和保留睾丸手术进行保守治疗。双侧睾丸表皮样囊肿的报道极为罕见。我们报告了1例患者的超声和MRI表现，该患者仅1个睾丸可触及结节，但超声显示双侧病变。超声检查时，囊肿具有内部“洋葱环”结构；无彩色多普勒信号。MRI检查时，囊肿呈分层状，在T2加权图像上有低信号和高信号交替区域。这些影像学表现以及肿瘤标志物实验室检查的阴性结果提示了正确诊断，从而能够实施保留睾丸手术。
