卵巢纤维卵泡膜细胞瘤的影像学表现

Imaging Findings of Ovarian Fibrothecoma

目的探讨卵巢纤维卵泡膜细胞瘤的螺旋CT及磁共振成像(MRI)表现并与病理对照分析,旨在提高对本病的影像学诊断水平。方法回顾性分析25例经手术病理证实的卵巢纤维卵泡膜细胞瘤患者的螺旋CT及MRI表现。结果 25例患者共发现27个病灶,单侧23例,双侧2例;病灶形态呈类圆形、卵圆形16个,分叶状11个;CT平扫示实性肿瘤和囊实性肿瘤实性部分的密度略低于子宫肌层,增强扫描示肿瘤在动脉期和延迟期呈缓慢渐进性轻度强化;MRI扫描后肿块实性部分T1加权像呈等或稍低信号,T2加权像抑脂序列呈稍低或稍高信号,弥散加权像呈稍高信号,增强后强化特点同于CT。3例患者盆腔内可见少量积液。结论卵巢纤维卵泡膜细胞瘤具有一定的影像学特征,对提高本病的诊断及鉴别诊断水平、降低术前误诊率有重要的临床价值。

Objective To summarize the computed tomography（ CT） and magnetic resonance imaging（ MRI） characteristics of ovarian fibrothecoma and to compare them with the pathological findings. Method CT and MRI features of 25 patients with pathologically proved ovarian fibrothecoma were retrospectively analyzed.Results Of these 25 patients,the tumors were single in 23 patients and bilateral in 2 patients. The tumors were round or oval in 16 cases and lobulated in 11 cases. CT plate scanning showed that both the solid masses and the solid components of the cystic and solid masses had slightly lower densities than that of the myometrium,and gradual and mild enhancement could be found in the arterial phase and delay phase after enhanced scan. MRI showed iso-low signal on T1-weighted imaging, slightly low or high signal on T2-weighted imaging of fat suppression sequences,slightly high signal on diffusion weighted imaging and the enhance characteristics as the well as CT after enhanced scan. Pelvic cavity effusion was seen in 3 cases. Conclusion Ovarian fibrothecoma have certain imaging characteristics,which are helpful to improve the diagnosis and differential diagnosis of this disease and lower the misdiagnosis rate before operation.