Giant serous cystadenoma of the ovary (pregnant)

Case contributed by Dr Nick Tarasov


35 weeks pregnant woman complains of belly enlargement with ascites suspected on US

Patient Data

Age: 25
Gender: Female

Giant left-sided cystic mass causing rightward and inward displacement of the gravide uterus arising from the left ovary. Mild ascites is also seen. The right ovary is not identified.

Location and structure of the placenta are normal.

Fetal organs are unremarkable.

Case Discussion

An interesting case of giant ovarian serous cystadenoma which could potentially be misinterpreted as ascites especially on ultrasound. However, a thin peripheral wall is seen on MRI, which helps distinguishing it from ascites.

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