睾丸表皮样囊肿的超声诊断价值

目的 探讨睾丸表皮样囊肿的超声表现及其与病理的关系.方法 回顾性分析2005年1月-2014年4月在本院行超声检查诊断为睾丸表皮样囊肿的25例病例的声像图资料,诊断结果与病理结果进行对照分析.结果 25例病灶均边界清晰,内无血流信号.12例病灶内部呈“洋葱皮”样或“漩涡”状改变;9例病灶周边有环状或蛋壳样强回声,其中1例病灶为囊实性结节,以实性为主,周边伴蛋壳样钙化;3例病灶同时具有内部“洋葱皮”样或“漩涡”状改变和周边强回声;4例病灶为不均质低回声结节,其内可见多发小片状液化区及点状强回声.超声诊断正确提示,睾丸表皮样囊肿23例,其余2例被误诊为睾丸恶性肿瘤,超声诊断符合率为92％（23/25）.结论 多数睾丸表皮样囊肿的超声表现具有特征性,而对于特征不典型者通过回顾性分析可以发现与其他睾丸肿瘤特别是睾丸恶性肿瘤的不同之处,对于指导临床诊治具有重要的意义.

Ultrasonic value in testicular epidermoid cyst diagnosis

Objective To investigate the relationship between ultrasonographic characteristics and pathologic basis of testis epidermoid cyst. Methods Sonographic features of 25 patients with testis epidermoid cyst who underwent ultrasound examination in our hospital from January 2005 to April 2014 were retrospectively analyzed, and the diagnosis results and pathologic findings were compared and analyzed. Results Of the 25 cases with clear boundary and no blood flowing, 12 cases had onion skin or vortex shape changes, 9 cases was surrounded by a ring or shell-like hyperechoic, 1 case was cystic nodular, mainly in solid, surrounding with eggshell calcification, 3 cases had both internal onion skin-like or vortex shape change and peripheral hyperechoic, 4 cases were heterogeneous hypoechoic nodules and showed multiple small pieces liquefaction zone and punctate echogenic. Ultrasonic diagnosis correct prompt testicular epidermoid cyst was found in 23 cases, and 2 cases were misdiagnosed as malignant tumors of testis. The diagnostic accuracy of high-frequency ultrasonography was 92% （23/25）. Conclusion The ultrasonography of testicular epidermoid cyst has a certain characteristic. Differences with other testicular tumors especially the malignant testicular tumors can be found in cases who have atypical features through retrospective analysis, which have important clinical significance to guide diagnosis for sonographer.