A: original duodenal biopsy illustrating subtotal villous atrophy; B: following a gluten-free diet, small bowel morphology improved to near normal appearance; C: mucosal relapse showing partial villous atrophy with normal enterocytes but an increase in lamina propria cellularity due to involvement with CMML (H + E stain, orig magnification × 32). A: original duodenal biopsy illustrating subtotal villous atrophy; B: following a gluten-free diet, small bowel morphology improved to near normal appearance; C: mucosal relapse showing partial villous atrophy with normal enterocytes but an increase in lamina propria cellularity due to involvement with CMML (H + E stain, orig magnification × 32). J S R Jennings et al. Postgrad Med J 2000;76:227-229 Copyright © The Fellowship of Postgraduate Medicine. All rights reserved.