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Sonographic and MR Imaging Findings of Testicular Epidermoid Cysts

¹ Department of Diagnostic Radiology, School of Medicine, Yeungnam University, 317-1, Daemyungdong, Namgu, Taegu, 705-717, South Korea.
² Department of Diagnostic Radiology, School of Medicine, Keimyung University, 194, Dongsandong, Junggu, Taegu, 700-712, South Korea.

OBJECTIVE. The purpose of this study is to analyze the sonographic and MR imaging findings of testicular epidermoid cysts.

CONCLUSION. Sonographic findings of a markedly heterogeneous intratesticular mass with or without alternating hypo- and hyperechoic layers surrounded by a hypoechoic or echogenic rim and the absence of flow on color Doppler sonography suggest the preoperative diagnosis of testicular epidermoid cysts. T2-weighted MR imaging findings of a high-signal-intensity mass with or without low-signal-intensity foci surrounded by a low-signal-intensity rim and the absence of enhancement on contrast-enhanced T1-weighted MR images can strengthen the preoperative diagnosis. These imaging findings can offer a basis for surgeons to attempt testis-sparing surgery instead of orchiectomy.

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