Pelvic effusion in patients with ovarian thecoma-fibroma associated with the tumor size and plaste CA-125 level: A retrospective magnetic resonance imaging study


      • This study revealed that the incidence of ascites accompanying thecoma-fibroma was 77.50%.
      • MR images showed tumors could be divide into three types according to the degree of cystic degeneration.
      • This study showed that the incidence of ascites was significantly correlated with tumor size, tumor solidity and serum CA-125 levels.



      To survey the occurrence rate of ascites in patients with thecoma-fibroma and its potential correlation with tumor MR imaging characteristics.


      A total of 40 patients with surgically proven thecoma-fibroma were enrolled in this retrospective study. We determined the tumor size, the components (solid or cystic) and their signal intensity features. Second, we identified ascites according to the fat-suppressed sagittal T2-weighted imaging sequence and divided all cases into two groups (with or without ascites). Furthermore, we explored the correlations of ascites with tumor size, tumor solidity, pathological types, patient's postmenopausal status and serum CA-125 levels by using the χ2 test.


      (1) Among the 40 cases, 15 tumors were fibromas, 15 thecomas, and 10 fibrothecomas. Nine patients (26.47%) had elevated CA-125 levels (>35.0 U/ml). (2) Thirty-one patients had ascites (77.50%), 29 of which had a small amount of ascites. Nine cases had no ascites (22.50%). (3) MRI showed a solid mass in 22 cases (55.0%), cystic mass in five cases (12.5%) and mixed solid-cystic mass in 13 cases (32.5%). The χ2 test revealed that the incidence of ascites was significantly correlated with tumor size, tumor solidity and serum CA-125 levels (P < 0.05), but not with menopause and pathological type (P > 0.05).


      Our data revealed that the incidence of ascites was 77.50% and was mainly correlated with tumor size and elevated CA-125 levels. These findings have potential value for improving the diagnosis and differential diagnosis of thecoma-fibroma.


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