Pseudomembranous Colitis: Not Always Caused by Clostridium difficile
Figure 3
Photomicrographs of rectosigmoid mucosal biopsies demonstrating (a) an ulcer bed with loss of epithelium and extensive granulation tissue and (b) chronic ischemic colitis with architectural distortion, crypt atrophy, and hyalinization of the lamina propria (H&E stain, 20x).
