What causes lump on top of calf?
Patient: I have a dime size lump that came out of nowhere at the top of my calf 3 days ago.  It is located on the outside edge of my calf (think of my calf as a tall rectangle and this would be in the far NorthWest part of that rectangle).  It is sore only when I touch it; otherwise I tend to forget it's there.  Are there lymph nodes on Doctor: Hi,Dear,Thanks for the query to HCM. I studied your problem in depth and I understood your concerns. Cause and plan of Treatment-In my opinion on the given data,you seem to have bug bite or may be a boil / or may be a lymphnode from wound in the leg.To fix the diagnosis you need to consult ER Surgeon.So don't build up wrong concepts and self medicate your self which would increase risks and costs to you.Instead just ask a query to HCM and be comfortable to resolve your health issues.Welcome for any more query in this regard to HCM.Write good reviews and Click thanks if you feel satisfied with my advise.Have a Good Day.Dr.Savaskar M.N.