CT diagnosis of ovarian gigantic cystic lesions(analysis of 13 cases)

Objective:To evaluate the CT diagnostic efficacy for localization and characterization of ovarian gigantic cystic lesions.Methods:CT findings of 13 patients with ovarian gigantic cystic lesions proved by surgery and pathology were studied retrospectively analyzed. There were 6 cases with malignant cystic lesions, 7 cases with beningn cystic lesions.Results:There is some difference between the CT manifestation and localization of ovarian gigantic cystic lesions and documentary report. In this study, 4 cases appears localizational error. 3 cases with benign lesions was misdiagnosed malignant, 2 cases with malignant lesions was misdiagnosed benign. The diagnosing rate about localization and characterization is lower than reported obviously. The nodule which in or outside the cystic wall is one of the differential signs between benign and malignant lesions. But in this study, it appears nodule in the cystic wall and septa, in the 3 cases benign lesions, 1 case with non-nodular cystic lesions was confirmed malignant after operation.Conclusion:The CT fixed position of gigantic cystic lesions can appear error. When combined with B-ultrasound, the diagnosing rate can be improved. When the nodule appears in the cystic wall, the number of nodule is one of differential signs between benign and malignant lesions.