摘要
目的分析卵巢颗粒细胞瘤(granulosa cell tumor,GCT)的CT、MRI表现及误诊原因,提高对该肿瘤的认识。方法回顾性分析经手术病理证实的10例GCT的CT、MRI表现。结果 10例GCT位于右侧4例,左侧6例。肿瘤最大径平均6.1cm。全部肿瘤边界清楚,包膜完整呈圆形或卵圆形7例,不完整呈分叶状3例;肿瘤呈囊实性8例,实性2例。7例CT检查,平扫肿瘤实性成分平均CT值为35HU。3例行MRI检查,实性成分T1WI呈等信号,T2WI呈稍高信号;囊性成分T1WI呈低信号,T2WI呈高信号。所有肿瘤实性成分增强后均呈中等程度强化。合并子宫内膜增生5例,腹水6例,同时合并子宫内膜癌及肌瘤1例。10例GCT术前均未能作出正确诊断。结论典型的GCT多呈囊实性,包膜完整,边界清楚,增强后肿瘤实性成分中等程度强化;易合并子宫内膜增生及少量腹水。因对该肿瘤缺乏足够的认识、部分肿瘤缺乏典型的影像表现、阅片不够仔细等是导致误诊的主要原因。
Objective To analyse the CT and MRI appearances and the cause of misdiagnosis of granulosa cell tumor （GCT） of ovary, so as and to improve the recongnition for this disease. Methods Retrospective analyses of CT and MRI features of 10 patients with pathologically confirmed were conducted. Results Of the 10 patients, 4 had right lesions and 6 had left lesions. The average of diameter was 6. 1 cm. All tumors were clear in shape masses, revealed well-circum- scribed with round or oval contour were in 7 cases, revealed non-circumscribed with irregular and lobulated contour was found in 3 cases; the tumors were cystic-solid lesions in 8 cases, solid lesions in 2. In 7 cases underwent CT examinations, the solid component with average of CT value showed 35 HU on pre-contrast views; In 3 cases underwent MRI examina- tions, the solid component displayed equisignal and the cystic contents displayed low-intensity signal on T：WI; the solid component displayed slightly high signal and the cystic contents displayed high-intensity signal on Tz WI. The solid compo nent of all tumors displayed intermediate enhancement on post- contrast views. 5 cases were accompanied with endometrial hyperplasia, 6 cases were accompanied with ascites, 1 case was accompanied with merge endometrial carcinoma and myoma at the same time. Ten cases of GCT preoperative failed to make the correct diagnosis. Conclusion The typical GCT is cystic-solid mass, revealed well-circumscribed,boundary clear, the solid component displayed intermediate enhancement on post- contrast views, which is often accompanied with endometrial hyperplasia and a small amount of ascites. The main causes of misdiagnosis are the tumor lack of adequate understanding, some tumors are lack of typical image performance, and are not carefully analyzing the data of imaging.
出处
《医学影像学杂志》
2013年第11期1756-1758,1762,共4页
Journal of Medical Imaging
关键词
卵巢
颗粒细胞瘤
体层摄影术
X线计算机
磁共振成像
Ovary
Granulosa cell tumor
Tomography, X-ray computed
Magnetic resonance imaging
