Which histologic finding on small bowel biopsy would indicate celiac disease rather than isolated lactose intolerance?

Which histologic finding on small bowel biopsy would indicate celiac disease rather than isolated lactose intolerance?

• A. Villous hyperplasia
• B. Inflammation of lamina propria without villous loss
• C. Villous atrophy with crypt hyperplasia
• D. Normal villi

Answer: (C)

In celiac disease, gluten-triggered injury causes a distinctive pattern in the small bowel: the finger-like villi become blunted or atrophied, and the crypts hypertrophy as the mucosa tries to regenerate, often with a marked increase in intraepithelial lymphocytes. This combination—villous atrophy with crypt hyperplasia—directly reflects immune-mediated damage to the intestinal mucosa and the resulting loss of absorptive surface. This is why the finding of villous atrophy with crypt hyperplasia is the best indicator for celiac disease. It distinguishes the condition from isolated lactose intolerance, which does not produce villous destruction on biopsy and usually has a normal mucosal architecture. Other patterns, like villous hyperplasia without atrophy, inflammation limited to the lamina propria without villous loss, or normal villi, do not match the classic mucosal changes seen in celiac disease.

In celiac disease, gluten-triggered injury causes a distinctive pattern in the small bowel: the finger-like villi become blunted or atrophied, and the crypts hypertrophy as the mucosa tries to regenerate, often with a marked increase in intraepithelial lymphocytes. This combination—villous atrophy with crypt hyperplasia—directly reflects immune-mediated damage to the intestinal mucosa and the resulting loss of absorptive surface.

This is why the finding of villous atrophy with crypt hyperplasia is the best indicator for celiac disease. It distinguishes the condition from isolated lactose intolerance, which does not produce villous destruction on biopsy and usually has a normal mucosal architecture. Other patterns, like villous hyperplasia without atrophy, inflammation limited to the lamina propria without villous loss, or normal villi, do not match the classic mucosal changes seen in celiac disease.