卵巢颗粒细胞瘤的MRI诊断

目的：探讨卵巢颗粒细胞瘤的MRI特征。方法：回顾性分析10例经手术病理证实的卵巢颗粒细胞瘤的MRI表现。结果：10例中双侧病变1例,单侧病变9例。肿瘤直径3.0-18.0 cm,平均6.5 cm,呈卵圆形、圆形,包膜完整,表面光整,界限清楚。10例中实性3例,囊实性7例,瘤内多发大小不等囊变,囊隔厚薄不均,其中囊变大于3 cm者7例。10例T1WI及T1WI FS均呈等低信号;T2WI及T2WI FS呈等高信号6例,T2WI及T2WI FS呈高低混杂信号4例;DWI b值800呈等高信号6例,高低混杂信号4例,ADC图呈高低混杂信号7例,等低信号3例。所测得的ADC值提示卵巢颗粒细胞瘤趋向恶性。10例中子宫体增大及内膜增厚7例,雌激素水平升高8例。结论：卵巢颗粒细胞瘤易囊变、出血,MRI信号较混杂;多合并子宫体增大及内膜增生,有助于MRI诊断及鉴别诊断。

MRI diagnosis of ovarian granulosa cell tumor

Objective:To determine MRI features of ovarian granulosa cell tumor.Methods:A retrospective analysis of MR images was performed in 10 patients with pathologically proven ovarian granulosa cell tumor.Results:Of the 10 patients,1 had bilateral lesions and 9 had unilateral lesions.Mean tumor diameter was 6.5cm with a range of 3.0~18.0cm.MRI revealed well-circumscribed,round to oval,encapsulated masses composed of solid(n=3) or mixed solid-cystic(n=7) components consisting of multiple cysts of varying size(>3cm...