What is the cause of painful fatty lump under the knee?
Patient: I have what appears to be a fatty lunch under my knee to the right - it's about 3" x 3 inches and pretty thick - it's semi firm and the area around it is so sore to the touch. Past few months it hurts almost all the time and the w hole region has a dull ache to it. 24/7. Doctor: Hi! thanks for your post and giving us an opportunity to discuss on the knee lumps!I must, again, describe your lump as painful, fatty, firm and thick; and I must consider followings as possibilities, according to my routine clinical experience:1. a bursa or inflamed degenerative cystic tumor like condition: 50% possibility2. benign lipomatous tumor like angiolipoma 30% possibility3. atypical fatty tumors like dermatofibroma, liposarcoma, fibrosarcoma etc 10% possibility4. other infective or inflammatory lesions 10% possibilityTherefore, you must not neglect this and better see your doctor today for some basic tests to confirm the nature of this lesion and thereby relieve your tension...!Wishing you good health,