睾丸生殖细胞肿瘤影像学表现  

Imaging manifestations of testicular germ cell tumors

作　　者：朱黎[1] 郝金钢[1] 

机构地区：[1]昆明医科大学第二附属医院放射科,云南昆明650018

出　　处：《实用放射学杂志》2017年第11期1714-1716,1727,共4页Journal of Practical Radiology

摘　　要：目的 探讨生殖细胞肿瘤影像学表现特征。方法 回顾性分析本院11例经手术病理证实的生殖细胞肿瘤CT、MRI表现，其中4例行CT平扫及增强检查，1例行MRI平扫及增强检查，6例行MRI检查及CT检查。结果 11例睾丸占位性病变中，4例精原细胞瘤，1例胚胎癌，1例未成熟畸胎瘤，3例混合型生殖细胞瘤，1例梭形细胞横纹肌肉瘤，1例类癌。生殖细胞肿瘤大多数在CT平扫上呈等、稍低密度影，边界清楚或不清，增强轻-中度强化为主；T1WI呈等、稍高信号，T2WI呈低、等、高不同信号，增强均匀或不均匀轻-中度强化，扩散受限或不受限。结论 典型的睾丸生殖细胞肿瘤影像学表现具有一定的特异性，但非典型生殖细胞肿瘤缺乏特异性，最终确诊仍依靠病理。Objective To discuss the imaging features of germ cell tumors on CT and MRI.Methods Preoperative CT and MRI data of 11 pathologically proved germ cell tumors were analyzed retrospectively.A total of 11 cases were enrolled in the study,4 cases received plain and contrast-enhanced CT scan, 1 received plain and contrast-enhanced MRI scan, and 6 received both CT and MRI scan.Results Histological examinations revealed 11 testicular neoplasms, among which 4 cases were seminoma, 1 was embryonal carcinoma, 1 was immature teratoma, 3 were mixed germ cell tumors, 1 was spindle cell rhabdomyosarcoma and 1 was carcinoid. Most germ cell tumors were iso density or low density with or without clear boundary, mild to moderate enhancement on CT scan. On MRI scan, most germ cell tumors showed iso-hyper intensity on T1 WI, hypointensity, isointensity or hyperintensity on T2 WI, heterogeneous mild to moderate enhancement, high signal intensity on DWI, and low or high signal intensity on ADC. Conclusion Typical testicular germ cell tumor imaging performance has a certain specificity, but the atypical germ cell tumor lacks specificity. So the final diagnosis still depends on the pathology.

关 键 词：睾丸肿瘤 生殖细胞肿瘤 磁共振成像 计算机体层成像 

分 类 号：R737.21[医药卫生—肿瘤] R445.2[医药卫生—临床医学]