PMC6277133_01
(A) Descending colon and (B) sigmoid colon with continuous nonbleeding ulcerated mucosa.
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F1
Campylobacter, and fecal leukocytes. Computed tomography showed a moderate amount of stool throughout the colon with no evidence of colonic wall thickening. Colonoscopy revealed a continuous area of nonbleeding ulcerated mucosa 45 cm proximal to the anus, but the study was stopped due to the extent of ulcerations and poor bowel preparation (Figure 1).
Colonic mucosa with nonspecific minimal reactive changes, and broad, curved, irregularly shaped "fish scales" sevelamer crystals without tissue necrosis on hematoxylin and eosin (100x).
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F2
On the eighth hospital day, histopathology revealed sevelamer crystals without signs of tissue ischemia (Figure 2).