Case Report

Resin-Induced Colonic Pseudotumor: Rare Complication from Chronic Use of Potassium Binders in a Hemodialysis Patient

Figure 1

(a) A mass visualized in the cecum by colonoscopy. (b) Computed tomography of the abdomen (axial view) with a 5-cm mass identified in the right-lower abdominal area (white arrowhead). (c) Microscopic examination shows mucosal inflammation and presence of inclusion crystals (hematoxylin-eosin stain) (×100). (d) Sodium polystyrene sulfonate crystals (black arrows) surrounded by inflammatory cells (hematoxylin-eosin stain) (×400).
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