RESUMO
Objective To investigate the CT and MRI features of ovarian fibroma.Methods CT and MRI findings of 42 patients with ovarian fibroma confirmed by operation and pathology were analyzed retrospectively.Twenty-one patients were examined by CT,26 cases was examined by MRI,and 5 cases were examined by CT and MRI.Results In 42 cases of ovarian fibroma,there were simple type in 29 cases,degenerative type in 11 cases,and special type in 2 cases.All the cases had single lesion,morphology were round or elliptic or lobulated,clear boundary in 40 cases,partial fuzzy boundary in 2 cases,3 cases with calcification,hemorrhage in 1 case.The maximum tumor diameter were 1.4-26.7 cm,median value was 5.5 cm.Simple type of ovarian fibroma were equal density on CT,low signal on T1WI and T2WI.Degeneration type was patchy,fissure,low density areas on CT or high signal on T2WI,and the tumor parenchyma was almost no enhancement or only slight enhancement.A large number of hemorrhages had been found in 1 special type patient,and significantly enhanced in the other special type patient.Special type were misdiagnosed as malignant tumor.Conclusion CT and MRI performance of ovarian fibroma has some characteristics,but diagnosis still need to rely on pathology.