I felt some knee pain about 3 weeks ago after a normal day. During this time I have developed a hard small mass on the inside of my knee. It’s about 1/5 the size of a golf ball. I took time off and ran yesterday with no pain. Three years ago I had meniscus tear surgery. Dr Google say I have incurable knee cancer. I have IMWISC in 90 days and concerned. Anyone have this kind of experience?
Could be your doctor didn’t clean up the knee like he should have, or perhaps more likely you have a ganglion cyst which are benign and usually clear themselves in time - unless you want it cut out before it clears. Normally these cysts are painless but, they can press on a nerve. As always, if you are concerned then see a doctor.
3rd testicle?