卵巢透明细胞癌的影像表现

Imaging Findings of Ovarian Clear Cell Carcinoma

目的探讨卵巢透明细胞癌(OCCC)的影像表现。方法回顾性分析9例进行手术治疗且确诊为OCCC的CT、MRI影像学、临床及病理相关资料,并分析病变的影像学特征。结果9例患者共发现9个肿瘤,均发生于单侧,7例边界清晰,2例边界欠清晰。7例呈椭圆形,2例呈不规则形。影像表现肿瘤分为两类:2例为多房囊性为主囊实性肿块,病变实性部分MRI T_(2)WI呈低、等、稍高混杂信号,呈“黑色海绵状”表现,T_(1)WI以等信号为主,增强扫描部分区域呈不均匀轻度强化,部分区域未见明显强化,囊性部分T_(1)WI囊腔呈低信号或稍高信号,T_(2)WI呈高信号;7例为单房/双房/多房囊性肿块伴壁结节,MRI壁结节T_(1)WI呈等、稍高信号,T_(2)WI呈等、稍高混杂信号,增强扫描呈轻度不均匀延迟强化,囊性部分T_(1)WI呈稍高、高信号或呈低信号,T_(2)WI呈高信号。结论OCCC通常表现为较大的单侧囊性肿块,伴少量不规则壁结节,或呈多房囊性为主囊实性肿块,T_(2)WI呈“黑色海绵”征。

Objective To investigate the imaging features of ovarian clear cell carcinoma(OCCC).Methods The CT,MRI,clinical and pathological data of 9 patients with OCCC who underwent surgery were retrospectively analyzed,and the imaging features of the lesions were analyzed.Results A total of 9 tumors were confirmed,unilateral,well-defined(7 lesions)or ill-defined(2 lesions).7 lesions were oval,and 2 lesions were irregular.The imaging findings of the tumors were divided into two types:2 cases were solid cystic masses with predominant multilocular cyst.The solid part of the lesion showed hypo-,iso-and hyperintensity on T_(2)WI("black sponge"sign),and isointensity on T_(1)WI.After contrast,the solid part showed uneven mild enhancement in some areas,and no obvious enhancement in other areas.The cystic part showed hypointense or slightly hyperintense signal on T_(1)WI and hyperintense signal on T_(2)WI.7 cases were unilocular/bilocular/multilocular cystic masses with mural nodules.The mural nodules showed iso-or mild hyperintensity on T_(1)WI and T_(2)WI.After contrast,the solid part showed uneven mild enhancement.Conclusions OCCC usually manifests as a large unilateral cystic mass with a few irregular wall nodules,or as a multilocular cystic mass with a"black sponge"sign on T_(2)WI.