Hello. Thank you for your question and welcome to HCM. I carefully read your query. This is a common and, almost always, a harmless problem. Due to insertion of the needle for anaesthesia, cannula and sheath, there are less or more leaks of blood in the area, throughout the procedure. It commonly happens after the extraction of the sheath, through which is the procedure carried out. Most often, it happens in people of both extremes, underweight or overweight, not excluding that it can happen to anybody. So, it looks just lıke a common bruise. If it is big, I recommend you to conduct an echo Doppler of the femoral artery, to see if this hematoma (the bruise) communicates with the artery and/or has established any pseudoaneurysm. But, if it is small, it will eventually clear by itself. To heal it faster, you can apply any heparin-based lotion locally. I hope I was helpful. Take care. Kınd regards, Dr. Meriton