First off, I will give some of my medical history. I am 18 years old. I have GERD, acid reflux, anxiety, a cyst in my kidney, TMJ, and a heart murmur. For a few months (5-6) I have had a painless lump under my left rib that seemed to get a little bit bigger about a month ago.. It is a little bit bigger than a marble. I went to the doctor to have it removed and she missed it. When I went back, she did a ultra sound again and its under my abdomen muscle. ( but it sticks out when I lean back a little bit) She mentioned that there was a little bit of blood flow in the lump. I had an MRI about 2 weeks ago. I called back for the results and the nurse said the doctor had to call me with the results... that was a week ago and still no call.
Any ideas what it could be?
Thank you!