I developed a Baker’s cyst on the back of it that is the size of a tennis ball. I have gone to an orthopedic doctor and had an ultrasound and x-rays done, but nothing showed up.

They opened the cyst and saw hair, teeth, fat, and something that looked like an eyeball (after sending it for testing, they found out it was not actually an eyeball)," Stuthers told Newsweek.

If a cyst’s appearance raises concerns—especially if the woman has elevated CA 125 levels—she will likely be referred to a gynecologic oncologist for specialized evaluation and treatment.