Ovarian Fibroma on Ultrasound

History: 40 year old female with pelvic pain.

Ovarian Fibroma: Transverse ultrasound image through the pelvis at a level inferior to the uterus shows a large 7.3 cm by 4.5 cm homogeneously hypoechoic mass.

The imaging appearance here is consistent with a solid adnexal mass. The differential diagnosis in this case includes pedunculated uterine fibroid, ovarian torsion, Brenner Tumor, fibroma or fibrothecoma, lymphadenopathy, GI tumors and Bladder tumors.

The final diagnosis on pathology was ovarian fibroma. These are benign tumors of the ovarian sex cord-stromal cells, and they are the most common sex cord ovarian tumors. A diagnosis of Meigs syndrome is given when an ovarian fibroma is accompanied by ascites and pleural effusion.

Ovarian Fibroma Oophorectomy specimen. This benign tumor has pushed the original ovarian tissue into a thin rim at the edge. (Photo credit: Wikipedia)