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Case Reports in Nephrology
Volume 2016 (2016), Article ID 3692086, 4 pages
Case Report

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

1Division of Nephrology and Hypertension, Brookdale University Hospital and Medical Center, Brooklyn, NY 11212, USA
2Division of Hospital Medicine, Yale-New Haven Hospital, New Haven, CT 06510, USA
3Department of Medicine/Cardiology Division, Woodhull Medical Center, Brooklyn, NY 11206, USA
4Medicine Department, NYU School of Medicine, New York, NY 10016, USA

Received 11 November 2015; Revised 28 January 2016; Accepted 1 February 2016

Academic Editor: Kouichi Hirayama

Copyright © 2016 Mary Bui et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Potassium-binding resins are widely used in the treatment of hyperkalemia, mostly in the acute setting. Gastrointestinal adverse events, although reported, are not frequently seen due to its short course of use. This report describes a case involving an end-stage renal disease patient on hemodialysis who developed a colonic mass after being on sodium polystyrene sulfonate chronically for persistent hyperkalemia. Gastrointestinal symptoms developed late during the treatment rather than early as reported previously in the literature. This mass was mistaken for a carcinomatous lesion, which initiated an extensive work-up as well as hospitalization that nearly resulted in a subtotal colectomy.