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Chemical gastropathy, usually related to chronic bile reflux or NSAID and aspirin intake"
Do you have acid reflux?
http://emedicine.medscape.com/article/176156-overview
Chemical gastropathy is a pattern of gastric antral mucosal injury with characteristic mucosal changes and minimal or no inflammatory cell infiltrates. It is a well-described histopathologic entity in adults
This might mess with your metabolism, but you would have to ask a doctor about it.
Lymphoid aggregates
http://www.zhub.com/pathology/listings/26.html
http://www.ncbi.nlm.nih.gov/pubmed/10912626
"i do have a pituitary tumor that ive not had any luck getting taken care of either."
What do you mean by that, there not treating it or they don't need too, I don't get it?
What are your IBS symptoms?