I am going to be 45 years old in two weeks and I found out 2 years ago I am a Type 2 Diabetec and I am 5"11 and weigh 290Lbs. A few months ago when I was doing sit ups I noticed that I had what looked like a bubble going from the top of my Belly Button to right under my solar plex bone under my chect bones ( if thats what its called) and its about 6 inches long and 2" wide. I have to be in a certain position for it to be seen or pop up. It does not hurt and when i press it but it feels like an air pocket or a piece of fat, its hard to explain and it only comes out when I am in the crunch position of a sit-up. Can it just be a piece of fat that I have in the center line of my abdomen in between the muscles of my old six pack abs that I have not seen for about 8 years now. When I tighten my stomach it is flat and hard like normal but I can still pinch a few inches of fat from that area. I did have an ultrasound done a few years ago when I found out I had Diabetes and they said I had a fatty liver and an enflamed Aorta. I was a heavy drinker years ago but it has been 4 years since I drank or did anything else and prior to that I was into bodybuilding so I always had good abs but now I look like a swelled up Tic! I know I need to get a check up and another ultrasound done but does that sound like anything you have heard of before and can it be a tumor or a mass. Please try and answer me if you can.

Thank you,
Nikkog23