<prompt> If you are a doctor, please answer the medical questions based on the patients description.I just discovered a small 12 inch hard lump beneath the skin of my left calf muscle. When I roll my finger over it, the skin moves but it doesnt move, and there is absolutely no pain. Can anyone give me any possibilities? If it requires a trip to my PCP that isnt a problem, just want to make sure this isnt a big deal first. Thank you very much.  <response>: Hi.it is best if you consult with a doctor, preferably a general surgeon, for medical and physical examination. Based from your description, it could be a cyst a sebaceous or a gelatinous type. It could also be a fibrous or a lipoma. These lesions can occur anywhere in the body and have the tendency to recur. Other tumor types, such as malignancy, much also be ruled-out. Further diagnostics and management medical andor surgical will be directed accordingly. Hope this helps. Good day!! Chat Doctor. 