case_images: PMC10174228_01
case_images: Colon endoscopy showing diffusely inflamed and ulcerated mucosa of transverse colon.
case_images: fmed-10-1097469-g0001.jpg
case_images: PMC10174228_01_fmed-10-1097469-g0001.jpg
case_images: F1
case_images: Endoscopy was performed and revealed a large ulceration in the transverse colon encompassing the whole circumference of the colon (Figure 1).
case_images: (A) Severe mucosal injury with acute inflammation within the bowel wall. Note the sevelamer crystal within the luminal debris. (H&E, 40x). (B) Sevelamer crystal within the luminal debris:characteristic fish scale appearance with orange and pinkish hue (H&E, 200x).
case_images: fmed-10-1097469-g0002.jpg
case_images: PMC10174228_01_fmed-10-1097469-g0002.jpg
case_images: F2
case_images: The histopathological finding of the colon described severe mucosal injury with acute inflammation and visible characteristic "fish-scale" crystals of sevelamer within the luminal debris, accompanied by acute inflammation and focal necrosis of the bowel wall, with no signs of dysplasia or malignant alteration (Figures 2A, B).