摘要
Abstract
Objective:To investigate MRI findings of ovarian serous papillary cystadenoma(SPC)to improve the diagnosis of SPC.Materials and Methods:Thirty patients with 31 SPC preoperatively underwent MRI.Images were evaluated and cor-related with pathology for the location,shape,size,loculation,signal intensity,thickness of the wall and septation,nodules or vegetations and solid area.Results:In 30 cases,29 were unilateral and 1 was bilateral.All cases were cystic masses with clear boundaries,and with average diameter of(5.6±2.3)cm(maximum diameter:2.2～13.7 cm).Twenty-nine patients underwent laparoscopic or adnexal excision,and one patient underwent abdominal excision.About 51.6%of the patients were diagnosed with benign tumors and 48.4%were diagnosed with borderline or malignant tumors.There were 20 single-locular cystic tu-mors,and the cyst fluid of 7 cystic masses showed slightly high signal on T1WI and high signal on T2WI.The cyst fluid of 13 cystic masses showed the same signal intensity as water with low signal on T1WI and high signal on T2WI.The cyst wall was thin and smooth with single or multiple papillary projections(about 0.4～3.4 cm in size)of low T2WI signal.There were 10 multilocular cystic masses,9 unilateral cases and 1 bilateral case.The cyst fluid of 3 cystic masses showed slightly high sig-nal on T1WI and high signal on T2WI.The cyst fluid of 7 cystic masses showed the same signal intensity as water with low high signal on T1WI and high signal on T2WI.The cyst walls were thin and smooth.No papillary projection was found in 1 cyst wall,and single or multiple papillary projections were found in 9 cyst walls,with the size of 0.9～3.1 cm.On T2WI,pap-illary projections showed low signals in 6 cases,slightly high signals in 3 cases.There was one solid mass with unilateral,superficial papillary appearance,low signal on T1WI,slightly high signal on T2WI,and obvious enhancement after enhance-ment.Conclusion:The characteristic MRI findings are a unilocular or multilocular cystic mass with single or multiple papil-lary projections.The papillary projections exhibit low signals on T2WI and slight enhancement.关键词
囊腺瘤,乳头状/卵巢肿瘤/磁共振成像Key words
Cystadenoma,Papillary/Ovarian Neoplasms/Magnetic Resonance Imaging分类
临床医学
