hello I have a lump in the inside rectal area I cannot see the lump can only feel it under the skin when looking inside rectum I see a small amount of puss coming out this has been there for a number of years a few months ago this lump got as big as a golf ball and I burst it thru the skin it was full of blood and pus I also have pain abdomen just lower right rib cage this is chronic pain also for past few years I have had multiple blood tests,infection tests even a ct scan but cannot ge a diagnose.thank you