Kayexalate-Induced Colonic Pseudotumor

A 66-year-old man was transferred to our institution for right flank pain, refractory hyperkalemia, and acute kidney injury. The patient received 2 doses of sodium polystyrene sulfonate (Kayexalate) at the outside facility. He continued to have right flank pain and a computed tomography scan of the abdomen was performed that showed a 3-cm mass in the cecum. A colonoscopy was performed, which showed a large mass adjacent to the ileocecal valve (Figure A). Pathology from the mass showed colonic mucosa with focal ulceration with rhomboid-like Kayexalate crystals (Figure B).
Source: Clinical Gastroenterology and Hepatology - Category: Gastroenterology Authors: Tags: Electronic Image of the Month Source Type: research