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  • Title: Gastrointestinal complications in patients with chronic kidney disease--a 5-year retrospective study from a tertiary referral center.
    Author: Thomas R, Panackal C, John M, Joshi H, Mathai S, Kattickaran J, Iqbal M.
    Journal: Ren Fail; 2013; 35(1):49-55. PubMed ID: 23078600.
    Abstract:
    BACKGROUND: Gastrointestinal complications are frequent in patients with renal disease and are responsible for substantial morbidity and mortality among these patients in developing countries. Many times, these patients are subjected to endoscopic evaluation and mucosal biopsies are taken for definitive diagnosis. This study explores the various upper and lower nonneoplastic gastrointestinal complications in patients with chronic kidney disease (CKD) and the role of endoscopic mucosal biopsies in the management of these patients. METHODS: Sixty-three patients with CKD, who were referred to endoscopic evaluation and biopsy due to significant gastrointestinal symptoms between January 2007 and December 2011 form the study group. Patients were divided into two groups: group 1 and group 2. Group 1 consisted of patients with CKD stages 1-5 and group 2 consisted of renal allograft recipients. All biopsies were reviewed by an experienced pathologist. Clinical data were collected from patient's medical records. RESULTS: There were 38 patients in group 1 and 25 patients in group 2. Twenty-nine out of 38 patients in group 1 presented with upper gastrointestinal (GI) symptoms and underwent esophagogastroduodenoscopy (OGD) evaluation, which showed erosive gastritis as the most common biopsy finding followed by ulcerative esophagitis and duodenitis. These patients were also found to be susceptible to develop ischemic colitis due to hypotensive episodes during dialysis, which are likely to occur during the initial stages of dialysis. The most frequent symptom in group 2 was chronic diarrhea (13 out of 25 patients) for which a colonoscopic examination was done which revealed various infection and drug-related colitis, mycophenolate mofetil (MMF) being a major culprit. CONCLUSION: CKD patients with high urea level are prone to develop upper GI symptoms and mostly show erosive gastritis, ulcerative esophagitis, and duodenitis on biopsy. On the contrary, renal allograft recipients mostly develop opportunistic infections and drug-related toxicity in the colon. MMF-related GI toxicity is an underrecognized entity and further prospective studies are required for its better understanding.
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