<s>[INST] about two months ago I noticed a hard lump the size of a half dollar on my right shin, it was tender and did hurt a little when touched or rub against something...now it is now a knot the size of a chick pea. My whole leg hurts from that spot down..not to bad but it still hurts..also my foot really hurts almost as if something fell on it..it mainly hurts when I stand and walk but its always hurting. I cant remember any injury to make the lump appear and I havent suffered any injury to make my leg and foot hurt...Please help, I am getting worried. [/INST] Hi.it is best if you consult with a doctor, preferably a general or an orthopedic surgeon, for medical and physical examination. Based from your description, it could be a cyst (a sebaceous or a gelatinous type), a fibrous or a lipoma. These lesions can occur anywhere in the body and have the tendency to recur. It could also be a tumor which needs further evaluation such as MRI and tissue diagnosis. Management (medical and/or surgical if indications are found) will be directed accordingly. Hope this helps. Good day!!~ Chat Doctor.  </s>