On colonoscopy, the mucosa of the colon typically looks normal, but biopsies of affected tissue usually show deposition of collagen in the lamina propria, which is the area of connective tissue between colonic glands. Radiological tests, including barium enemas are typically normal.
What does collagenous colitis mean?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What does collagenous colitis mean? [/INST] \n On colonoscopy, the mucosa of the colon typically looks normal, but biopsies of affected tissue usually show deposition of collagen in the lamina propria, which is the area of connective tissue between colonic glands. Radiological tests, including barium enemas are typically normal.</s>