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  • Title: Diagnosis and treatment of chronic abdominal pain 5 years after Roux-en-Y gastric bypass.
    Author: Blom-Høgestøl IK, Stubhaug A, Kristinsson JA, Mala T.
    Journal: Surg Obes Relat Dis; 2018 Oct; 14(10):1544-1551. PubMed ID: 30449511.
    Abstract:
    BACKGROUND: Knowledge of optimal diagnostic workup, etiology, and response to treatment of chronic abdominal pain after Roux-en-Y gastric bypass (RYGB) is limited. OBJECTIVE: To define the etiology of chronic abdominal pain presenting at the 5-year follow-up after RYGB and to evaluate response to treatment. SETTING: Oslo University Hospital (tertiary referral center for obesity surgery). METHODS: Of 234 patients operated during a randomly selected 12-month period, 165 (71%) returned for 5-year follow-up, and 160 responded to study questionnaires. Of these, 54 (34%) reported chronic abdominal pain and were invited to participate in a structured diagnostic and treatment algorithm. These patients were contacted for the evaluation of their response to treatment. RESULTS: Fifty-one of 54 patients (94%) reporting chronic abdominal pain at the 5-year follow-up were included in the study. Of the 45 patients with onset of symptoms post-RYGB, 28 (62%) underwent one or more radiologic evaluations, 10 (22%) underwent endoscopy, and 13 (29%) underwent laparoscopy. Diagnosis and treatment were established for 34 patients (76%), whereas 11 (24%) had abdominal pain of unknown cause. The most common etiology was internal herniation (n = 6), dumping (n = 6), food intolerance (n = 6), gallstones (n = 5), and irritable bowel syndrome (n = 4). After a median follow-up of 13.0 months (standard deviation, 11.5), 37 (82%) patients reported remission or improvement of symptoms, 6 had unchanged symptoms, and 2 patients were lost to follow-up. CONCLUSIONS: The etiology of long-term chronic abdominal pain post-RYGB is diverse. A multidisciplinary team can help most patients with dedicated follow-up, but a subset of patients has symptoms of unknown etiology.
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