Abdominal distention despite being told her uterine fibroids "shrunk" after menopause. [Abdominal] [XR] [CT]

54 year old female with a history of uterine fibroids with persistent abdominal distention despite being told her fibroids shrunk after menopause - presumably via some pelvic ultrasound, which we didn't have.

Abdominal X-ray [top left] was possibly was called normal, which is not completely unreasonable. However, with the help of the follow-up coronal CT [top right], one can see that there is a vague area lacking any bowel gas that looks like it could be a mass. Axial [middle] and sagittal [bottom] CTs show a nonspecific, solid mass, well-circumscribed, with no calcifications, cysts, hemorrhage, or fat inside. The left kidney is pushed up by the mass, but the fat plane between the two is preserved with no evidence of renal invasion.

The patient underwent surgical resection.

Final diagnosis: Retroperitoneal dedifferentiated liposarcoma.