卵巢无性细胞瘤的MRI表现  

MRI Manifestations of Ovarian Dysgerminoma

作　　者：陈兴发[1] 陈晓丹 王运韬[1] 任旺[1] 何庄贞 林琳[1] 刘向一[1] CHEN Xing-fa;CHEN Xiao-dan;WANG Yun-tao;REN Wang;HE Zhuang-zhen;LIN Lin;LIU Xiang-yi(Department of Radiology,Fujian Cancer Hospital(Fujian Medical University Cancer Hospital),Fuzhou 350014,Fujian Province,China)

机构地区：[1]福建省肿瘤医院(福建医科大学附属肿瘤医院)放诊科,福建福州350014

出　　处：《罕少疾病杂志》2021年第4期1-3,共3页Journal of Rare and Uncommon Diseases

摘　　要：目的探讨卵巢无性细胞瘤的MRI表现,旨在提高对其诊断的准确性。方法回顾性分析10例经手术病理证实的无性细胞瘤患者的临床资料及MRI表现。结果10例无性细胞瘤,单纯型9例,混合型1例。共11个病灶,其中1例为双侧,9例为单侧。最大直径约11.7~26.4cm,平均最大直径18.2cm。圆形或类圆形7例,分叶状3例。9例边界清晰,1例边界欠清。8例为实性或以实性为主肿块,2例为囊实性肿块。实性部分T_(1)WI呈等或稍低信号,T_(2)WI呈等或稍高信号,肿瘤均可见T_(1)WI、T_(2)WI呈低信号的包膜及纤维间隔,增强扫描单纯型实性部分呈轻-中度强化,混合型实性部分及纤维间隔强化较明显。包膜及纤维间隔内可见迂曲血管,肿瘤纤维血管呈“间隔样排列”及实性部分呈结节样改变。1例直接累及子宫,2例伴大网膜、盆底腹膜转移,1例伴腹膜后和盆腔淋巴结转移。结论无性细胞瘤的MRI表现具有一定特征性,结合临床特征有助于无性细胞瘤的诊断,最终确诊依靠病理。Objective To investigate the MRI manifestations of ovarian dysgerminoma in order to improve the level of diagnosis and recognition.Methods The MRI imaging and clinical data of ovarian dysgerminoma in 10 patients which had been proved by pathology were retrospectively analyzed.Results There were 10 cases of ovarian dysgerminoma,9 cases belonged to single type,and 1 was mixed type.There were 11 lesions,including 1 bilateral lesion and 9 unilateral lesions.The maximum diameters of these lesions ranged from 11.7cm to 26.4cm,with a mean of 18.2cm.7 cases were round or quasi round,3 cases were lobulated.9 cases had clear boundary,1 case had unclear boundary.8 cases were solid or mainly solid mass,2 cases were cystic solid mass,solid part showed equal or slightly low signal on T_(1)WI,T_(2)WI showed equal or slightly high signal.The capsule and fibrous septum showed low signal on both T_(1)WI and T_(2)WI.The solid part of the simple type showed mild to moderate enhancement,and the solid part and fiber interval of the mixed type showed obvious enhancement.Tortuous vessels can be seen in the capsule and fibrous septum,and the fibrous vessels were"spaced-like arrangement"and the solid part was nodular.The uterus was directly involved in 1 case,omentum majus and pelvic floor peritoneal metastasis in 2 cases,and retroperitoneal and pelvic lymph node metastasis in 1 case.Conclusion Combined with the clinical features,MRI scanning provides valuable characteristics for the diagnosis of ovarian dysgerminoma,the final diagnosis depends on pathology.

关 键 词：卵巢肿瘤 无性细胞瘤 磁共振成像 

分 类 号：R737.31[医药卫生—肿瘤] R445.2[医药卫生—临床医学]