睾丸间质细胞瘤的声像图特征分析

Ultrasonic appearance of leydig cell tumors

目的探讨睾丸间质细胞瘤的超声声像图特征。方法对5例病理证实的睾丸间质细胞瘤超声声像图进行分析。结果肿块均为单发,均呈类圆形,边界清;4例(4/5)肿块最大径<15 mm,内部均呈实性均匀低回声,后方回声无改变;1例(1/5)肿块最大径约25 mm,内部呈实性不均匀中等回声,其间见不规则高回声混杂,后方回声稍衰减;5例肿块内均未见钙化斑,不伴有睾丸微石症;所有病例肿块周边均见较丰富血流信号,其中3例(3/5)肿块内血流信号亦较丰富,2例(2/5)肿块内无明显血流信号;4例(4/5)呈低阻力血流频谱,RI<0.5。结论当肿块小,呈均匀低回声,无钙化,后方回声无变化,多血供,尤以肿块周边血流信号较丰富,RI<0.5时,应考虑到睾丸间质细胞瘤的可能。

Objective To explore the ultrasonic features of leydig cell tumors （LCTs）. Methods The sonographic appearances of 5 cases of LCTs confirmed by pathology were analyzed . Results All cases were round shape, well - defined lesions. 4 cases of those were immogeneously hypoechoic with diameter less than 15 into. One case was enhomogeneously isocehoic with irregular hyperecho in the lesion. No calcified plaques and testicular microlithiasis were found. All the cases showed abundant peripheral blood flow ,3 of 5 cases were with internal hypervascolarity, 2 of 5 cases had no obvious blood flow signals in masses, 4 of 5 cases were with low resistance blood flow spectra （ RI 〈 0.5 ）. Conclusion LCTs should be considered when lesion are small,round, and homogeneously hypoechoic with aboundant blood flow（ RI 〈 0.5 ）.