<s>[INST] I am a 70 yo male who has treated hi blood pressure and had a  quad by-pass 14 years ago.  I have a 2" prominent lump which appears to be just off the left side of my right side shin. It is sore to touch and when the foot is flexed toward the shin it is painful. There is a fairly large slight bruising around the area.  I did not hit anything to cause the lump. It was much more painful 5 days ago on my 10 hour drive home from vacation and the pain was spread over a larger area.I was surf fishing for a week standing several hours a day.  I had some swelling of my lower extremities which has subsided do to the standing and poor diet while vacationing (too much salty foods)!Any ideas? [/INST] Hello rearward welcome to Chat Doctor.come have evaluated your query thoroughly.* This seems more likely inflammatory lesion from variety of causes - unknown compression or pressure during some act - related to coagulopathy - following unnoticed bug bite - others * Needs proper clinical evaluation with Doppler ultrasound examination for the final diagnosis and further management. Hope this clears your doubt . Wishing you fine recovery. Welcome for any further assistance. Regards dear take care. </s>