Diagnosis and differential diagnosis of ovarian thecoma-fibroma in multi-slice CT / 实用放射学杂志

ABSTRACT

Objective To analyze the imaging features of ovarian thecoma-fibroma in multi-slice CT (MSCT )and improve the di-agnostic level.Methods CT features of 26 patients with 28 pathologically confirmed lesions were analyzed retrospectively.Correla-tion between tumor length and ascites and menopause was analyzed.Results Of 26 patients (28 lesions),24 patients were unilateral, 2 patients were bilateral.Of 28 lesions,there were 18 ovarian thecoma,6 fibrothecoma and 4 fibroma.The longest diameter of tumor ranged from 34.74 mm to 227.64 mm (mean value 101.06 mm±42.25 mm).The longest diameter of tumor in the group of ascites (n=1 7)was larger than that of without ascites.All the tumors had well-defined border,with 24 of them round or oval in shape,4 lobulated;with 22 of them solid in composition,4 mixed,2 cystic;with 20 of them inhomogeneous in density.The tumors showed no or mild enhancement,0-5 HU added CT value in 1 1,5-10 HU in 1 1,10 -20 HU in 6,with 4 cases showing multiple slim blood vessels during the arterial phase.Conclusion The typical imaging features of ovarian thecoma-fibroma were unilateral,oval,solid mass with well-defined border,no or mild enhancement (less than 20 HU)and accompanied by ascites.These characteristics will be helpful in the diagnosis and differential diagnosis of ovarian thecoma-fibroma.