### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, I have a small hard lump on the outside of my left knee, in line with the joint. It doesnt hurt until i knock it and it hasnt changed size or place. It is more visable when the leg is stretched. I have been to see a dr who said there was nothing to worry about but I am still worrying. What do you think it could be?

### output:

Hi, Dear,Welcome with your query to Chat Doctor. Studied your query in full depth of its details. Reviewed it in context of your health concerns. Based On the facts, You mostly seem to suffer from-Oschgood Shatters Disease-/ or Asteroid hematoma/ or osteophytes from knee arthritis. Treatment -Would depend on cause-Oschgood shatters disease-Cold compresses/Tab NSAIDs for 7 days/ Tab Choral Fort/ It D3 with Calcium would resolve / with Physiotherapy.-Asteroid Hematoma -if causes discomfort could be excised surgically. Osteophytes-Need Treat with Arthritis-ARthroscopic surgical debridement of the osteophytes and arthritis of the knee joint and accompanied storied ligaments. Intra-articular injections of the mesenchymal stem cells would resolve the arthritic damage to the buffer cartilage knee menisci. Knee replacement in extreme arthritic cases is advisable. Hope that, This reply would help you to plan further treatment soon with your treating doctors. Best of Luck and early recovery. Welcome any further query in this regard, which would be replied in next session. Good Day!! Chat Doctor. N. Senior Surgical Specialist