【摘要】 目的 探讨女性卵巢性索间质肿瘤的影像学表现。方法 回顾性分析经病理证实的69例卵巢性索间质肿瘤的CT及MRI表现。结果 69例卵巢性索间质肿瘤中卵泡膜纤维瘤31例、卵泡膜细胞瘤19例、纤维瘤12例、颗粒细胞瘤5例、卵巢间质肉瘤2例。69例患者均行CT及MRI检查。肿块呈类圆形或分叶状,边界清晰,大部分（52例,占75%）以实性为主、合并囊性变,部分（13例,占19%）完全呈实性,少数（4例,占6%）呈囊性。CT平扫呈低密度,增强检查强化不明显或呈轻度延迟强化;MRI检查T₂WI上实性部分多呈低信号,扩散加权成像（DWI）上信号稍高。结论 卵巢性索间质肿瘤表现为边界清楚实性为主的肿块、常伴囊性变,增强后强化不明显或轻度延迟强化,MRI T₂WI上实性部分多呈低信号,DWI上信号稍高,依据这些影像特征有助于提高这类肿瘤的诊断准确率。更多还原

【Abstract】 Objective To discuss the imaging findings of the sex cord-stromal tumors of ovary.Methods The pathologically confirmed CT and MRI images of 69 patients with sex cord-stromal tumors of ovary were collected retrospectively.Results Among 69 cases of ovarian sex cord-stromal tumors,there were fibrothecoma 31 cases,thecal cell tumor 19 cases,fibroma 12 cases,granulosa cell tumors 5 cases and stromal sarcomas 2 cases.CT and MRI had detected all the 69 tumors.Most of the tumors（52 cases,accounting for 75%） were presented as mainly solid tumors combined with cystic changes,some（13 cases,accounting for 19%） were presented as all solid and a few cases（4 cases,accounting for 6%） were presented as cystic tumors.The tumors were round or oval,with clear boundary,which showed low density,and cither no obvious enhancement or mild delayed enhancement on CT scan.The solid part of tumors showed low signal on T₂WI and slightly higher signal on diffusion weighted imaging（DWI）.Conclusion The sex cord-stromal tumors of ovary arc mainly solid tumors combined with cystic changes,with clear boundary,cither with no obvious enhancement or mild delayed enhancement and low signal on T₂WI and slightly higher signal on DWI.The study shows that the above imaging features arc helpful to improve the diagnostic accuracy of sex cord-stromal tumors of ovary.更多还原