What is erythematous duodenopathy?

I had to laugh when I read the first answer. "Pathy" doesn't denote "the study of". "Logy" (as in biology, physiology, etc) means "the study of". "Pathy" mechanism disease.

Erythematous duodenopathy is a condition involving red, inflamed lesions in the mucosa of the duodenum, the first portion of the small intestine which is what the stomach empty into. The lesions can be bleeding or non-bleeding. They're diagnosed on endoscopy. If the lesions are surrounded by the stomach, the condition is called erythematous gastropathy. If a condition is in the colon it's colonopathy, if within the ileum, ileopathy and so on.

Erythematous means reddened. The word erythema way redness. Erythematous is the adjective (descriptive) form of the word. You can see erythema (redness) on a rash but you'd describe the nouns as erythematous (reddened). Pathy means disease and duodeno refers to the affected nouns, the duodenum. Put it all together and it says "disease of angry duodenum".
Its the study of redness dealing with the first fragment of the small intestine

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