while shaving my legs this morning, I discovered a soft, painless, little larger then a golf ball size lump behind my knee that wasnt there a week ago.  It is large enough to see when standing, but I can not feel it all when sitting.  Im 61, 55 185 lbs.
Hi, dairy have gone through your question. I can understand your concern. You may have some soft tissue tumor like lipoma or neurofibroma or dermatofibroma or some benign cyst like lesion. You should go for fine needle aspiration cytology or biopsy of that lump. It will give you exact diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health.