title: [Calcium polystyrene sulfonate induced colonic necrosis in patient with chronic kidney disease].
abstract: A 63-year-old woman was admitted due to right upper quadrant abdominal pain. She was going through hemodialysis due to end stage renal disease and taking calcium polystyrene sulfonate orally and rectally due to hyperkalemia. Colonoscopy showed a circular ulcerative mass on the proximal ascending colon. Biopsy specimen from the mass showed inflammation and necrotic debris. It also revealed basophilic angulated crystals which were adherent to the ulcer bed and normal mucosa. These crystals were morphologically consistent with calcium polystyrene sulfonate. She was diagnosed with calcium polystyrene phosphate induced colonic necrosis and improved with conservative treatment.
authors.affiliation: Departments of Internal Medicine, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.
authors.forename: Sung Hoa
authors.initials: SH
authors.lastname: Lee
authors.forename: Sung Jung
authors.initials: SJ
authors.lastname: Kim
authors.forename: Go Eun
authors.initials: GE
authors.lastname: Kim
authors.forename: Woo Jin
authors.initials: WJ
authors.lastname: Lee
authors.forename: Won Ki
authors.initials: WK
authors.lastname: Hong
authors.forename: Gwang Ho
authors.initials: GH
authors.lastname: Baik
authors.forename: Young Hee
authors.initials: YH
authors.lastname: Choi
authors.forename: Dong Joon
authors.initials: DJ
authors.lastname: Kim
mesh_terms: D003108:Colonic Diseases / Q000139:chemically induced / Q000150:complications / Q000473:pathology*; D003113:Colonoscopy; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications / Q000175:diagnosis*; D008875:Middle Aged; D009336:Necrosis; D011137:Polystyrenes / Q000009:adverse effects*
chemical_list: D011137:Polystyrenes; C003321:polystyrene sulfonic acid