Objective:

To investigate the clinical and ultrasonographic features of ovarian dysgerminoma.

Methods:

From June 2017 to December 2020

the clinical characteristics and sonographic features of 24 cases with ovarian dysgerminoma surgically confirmed in Pecking Union Medical College Hospital were reviewed.

Results:

The medical records of 24 patients with ovarian dysgerminoma were reviewed. The average age was (19.38.3) years. 87.5% (21/24) cases were unilateral. Elevated serum level of human chorionic gona

dotropin (hCG) was observed in 85.7% (12/14) patients

ranging from 28 to 8 660 U/L. 29.2% (7/24) patients with gonadal dysgenesis

chromosome karyotypes were all 46

type XY. Among them

71.4% (5/7) lesions did not be showed by ultrasound clearly

including 3 bilateral lesions.19 lesions were showed by ultrasound in 19 cases

average maximum diameter was (14.76.2) cm

78.9% (15/19) were lobulated

mainly solid or solid

all had clear boundaries

high echo separation and partition bar flow signals visible in 68.4% (13/19).

Conclusion:

Ovarian dysgerminoma were mostly unilateral pelvic lesions in young women patients

which can be accompanied by elevated hCG level. Ovarian dysgerminoma has obvious ultrasonographic characteristics.Patients with gonadotic dysplasia can be bilateral lesions and may be difficult to detect through ultrasound due to small lesions.