Baker's Cyst

This patient had a large palpable area on the back of his knee that you really didn't even have to palpate to know it was there. You could see it sticking out the back of his knee. The radiologist read this as a large Baker's cyst. We get patients all the time with Baker's cysts but I thought this one would be something different because of the size of it(even though I could see that it was fluid filled), but guess I was wrong. This patient also had osteoarthritic changes and a tear of the posterior horn of the medial meniscus. I posted a picture of the Baker's cyst so you can see how large it was on the images.