卵巢良性肿瘤的MRI诊断与鉴别诊断

MRI diagnosis and differential diagnosis of benign tumor of ovary

目的:探讨卵巢良性肿瘤典型与不典型的MRI征象,提高卵巢良性肿瘤诊断及鉴别诊断的水平。方法:搜集经手术和病理证实22例盆腔肿块,所有病例均行MRI平扫及增强检查,回顾性分析其MRI征象。结果:22例中,浆液性囊腺瘤10例,粘液性囊腺瘤8例,囊性畸胎瘤3例,卵巢纤维瘤1例。浆液性囊腺瘤表现为:囊壁薄且规则,无分隔或分隔薄且均匀。粘液性囊腺瘤表现为瘤壁和间隔厚薄不均匀;囊内信号不均匀。囊性畸胎瘤主要表现为瘤体内均见脂肪成分。结论:卵巢良性肿瘤由于组织成分不同,MRI表现具有一定的特征。

Objective：To discuss typical and untypical MR signs of benign ovary tumors in order to improve the diagnostic accuracy.Methods：MRI images of 22 patients with pelvic mass were retrospectively analysed,all were performed plain and enhanced MRI scan and confirmed by pathology.Results：22 patients included 10 cases of serous cystadenoma,8 cases of mucinous cystadenoma,3 cases of cystic teratoma,and 1 case of ovary fibroma.Serous cystadenoma always had thin and regular capsule wall with non-separate or uniform septation.The features of mucinous cystadenoma were that the wall and separate of tumors were thick and irregular,and the signal of cyst was uneven cystic teratoma.Cystic teratoma in MRI showed mixed signal which contained fat focus.Conclusion：Benign ovary tumors have their own characteristic features.