卵巢良性囊性病变的MRI诊断与鉴别诊断

MRl diagnosis and differential diagnosis of ovarian cystic disease

目的 提高对卵巢良性囊性病变MRI表现的认识、诊断及鉴别诊断。方法 回顾性分析了经手术病理证实的109例共133个卵巢良性囊性病变的MRI表现。结果①非赘生性囊肿、囊腺瘤和多囊卵巢的特征为薄壁的囊性肿块,囊肿以单房为多,囊腺瘤多有壁结节,多囊卵巢呈多房性小囊腔,平扫T_1WI呈低信号,T_2WI呈高信号;粘液性囊腺瘤T_1WI可呈高或稍高信号。②MRI对卵巢囊性畸胎瘤和子宫内膜异位囊肿具有特征性诊断价值,两者T_1WI/T_2WI均以高信号为主,前者T_2WI/IR脂肪抑制序列呈低信号改变。结论 MRI对卵巢良性囊性病变具有较高的诊断及鉴别诊断价值。

Objective To improve the recognition and diagnosis and differential diagnosis of MRI for ovarian cystic disease. Methods The MRI appearances of 133 ovaries in 109 cases of ovarian cystic disease were studied retrospectively. All the cases were proved by surgery and pathology. Results (1) Nonneoplastic cyst, cystadenoma and stein-leventhal were characterized by thin walled cystic mass,cystic wall and septa were thin and regular. Most cysts are single chamber. There are nodes on the wall in most cystadenomas. Most stein leventhals are multi chamber. Plain scanning T2WI is high signal,T,WI is equal and low signal.On T1WI,cystomyxo-adenoma presented as high or little high signal. (2)The value of typical diagnosis of cystic teratoma and endometriosis cyst of ovary could be made by MRI,both are high signal on T|WI and T2WI,cystic teratoma is low signal on T2WI/IR. Conclusion The diagnosis and differential diagnosis of MRI for overian cystic disease is very valuable.