Hello, I am asking this for my boyfriend. He was robbed about 4 years ago, His jaw was cracked, right eye had 10 stitches, 3 teeth knocked out, 20 stitches in lip, roof of mouth swollen for months. Recovery went well until a knot developed above his right eye around the size of a quarter 6 months to a year later. It is still there and doesn't tend to cause him any pain. He has never gotten it checked out and is wondering if it could be something dangerous. Thankyou!