Conversation: The conversation between human and AI assistant.
[|Human|] 63 y.o. white male. Just noticed a soft lump in the center of my upper abdomen (from my sternum to navel) apx 1.5" wide x 5" long. Interestingly, I had laparoscopic gall bladder surgery 7 years ago and there were "holes" for the surgery at each end of the current lump. Mild aching pain. Noticed lump when flexing stomach muscles (sitting up in bed). Vegetarian for last 21 years (do eat fish). Constipated often over the last 5 or so years. Better recently by avoiding gluten. Wondering if the lump could be a hernia of some sort or possibly and aneurysm.
[|AI|]  Respected user, hi I evaluated your query thoroughly.* Till your narration it seems epigastric hernia most likely, other cause may be lipoma.* Clinical examination with signs of evaluation & ultrasound of abdomen are confirmatory of the lesion. Hope this clears your query. Welcome for any further assistance. Thanks for using Chat Doctor .com & giving me an opportunity to assistWishing you fine recovery from the same. Regards dear take care.