[MENTION=1906]GatorRay[/MENTION]
I wouldnt worry too much..
Jack has a similar lump/ball that he develeoped shortly after his surgery early this year.
Its almost golf ball size maybe a bit smaller. If developed a few inches abover the stitches on his belly...
Its almost like an Air pocket or could be liquids.. Its doesnt bother him, its not growing so Im leeting it be until his next scheduled vet visit for his yearly tag and overall checkup....