ulcerative colitis

noun Pathology.
chronic ulceration in the large intestine, characterized by painful abdominal cramps and profuse diarrhea containing pus, blood, and mucus.
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Medical Dictionary

ulcerative colitis n.
A chronic disease of unknown cause, characterized by ulceration of the colon and rectum with bleeding, mucosal crypt abscesses, and inflammatory pseudopolyps, often causing anemia, hypoproteinemia, and electrolyte imbalance.

The American Heritage® Stedman's Medical Dictionary
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