Application of CT in ovarian cystadenoma

Objective:To evaluate the diagnostic value of CT in the examination of the ovarian cystadenoma.Methods:We reviewed and analyzed retrospectively the CT scans of 27 patients with ovarian cystadenoma confirmed by surgery and pathology,including 13 cases with serous cystadenoma,9 cases with mucious cystadenoma,and 5 cases with borderline tumor. All were examined with pre-and post-enhanced CT scanning and with ultrasound (US) of gynecological department in 31 cases. We analyzed with emphasis on lesion characteristics of CT findings and compare CT with US in detection of ovarian cystadenoma.Results:All ovarian tumors were unilateral.22 patients with the serous and the mucionous tumors were correctly diagnosed as ovarian benign cystadenoma by CT.US with 31 examinations permitted detection of the 29 tumors.5 patients with borderline neoplasma were incorrectly diagnosed as a benign tumors by CT and US.The serous cystadenomas were 15cm in mean size,12HU in mean value of attenuation, and unilocular lesion in all. The mucionous cystadenomas were 19cm in mean size,15HU in mean value of attenuation,and multilocular lesion in 7 of 9 the tumors. At CT,only 15 cases of 27 tumors were correctly demonstrated in localization. At 31 examinations with US,28 cases were correctly detected in localization. Conclusion:CT is the effective imaging modality in diagnosing ovarian cystadenoma.CT is difficul for determining pathologic nature of borderline cystadenoma and accurately location of huge tumors.