乳腺黏液癌的MRI征象特点

目的 分析乳腺黏液癌的MRI表现特征。方法 回顾性分析经手术病理证实的34例乳腺黏液癌的MRI表现，包括病变形态、最大径、T1WI及T2WI信号特征、肿块内部强化方式及增强曲线类型、DWI信号特征及ADC值。结果 34例乳腺黏液癌单纯型22例，混合型12例。MRI示21例为肿块型，6例为非肿块型，7例为多发结节型；T1W平扫22例呈低信号，10例呈等信号，2例呈混杂高信号；T2W脂肪抑制序列20例呈高信号，13例呈不均匀高信号，1例呈低信号，19例病灶内可见低信号纤维分隔；动态增强早期呈典型环形强化11例；时间-信号曲线呈流入型11例，平台型18例，流出型5例。结论 乳腺黏液癌的MRI表现有一定特点，MR检查有助于对该病的诊断。

MRI features of mucinous breast carcinoma

Objective To explore MRI features of mucinous breast carcinoma. Methods MR data of 34 patients with mucinous breast carcinoma confirmed by histopathology were analyzed retrospectively, including lesions morphology, maximum diameter, T1WI and T2WI signal characteristics, features of internal reinforcement, time-intensity curve (TIC) type, DWI and ADC characteristics. Results There were 22 cases of pure tumors and 12 mixed tumors; 21 cases were mass types, 6 cases were non-mass types, and 7 cases were multiple nodular types. On T1WI, there were low signal intensity in 22 case, equal signal in 10 cases, and mixed high signal in 2 cases. On fat suppression T2WI, 20 cases showed high signal, 13 cases showed mixed high signal and 1 case showed low signal, and 19 cases showed low signal fiber separation inside. Dynamic contrast enhancement showed typical circinate enhancement in 11 cases. TIC of 11 cases were wash-in types, 18 cases were lateau types and 5 cases were wash-out types. Conclusion MRI features of mucinous breast carcinoma has certain characteristics. MRI is helpful to diagnosis of mucinous breast carcinoma.