Development of urinary incontinence in a 7-year old boy after therapy with proton pump inhibitors and complete resolution of his clinicopathologic features of eosinophilic esophagitis after H2-receptor antagonist treatment: A case report
Abstract
Background: Several diseases result in profound infltration of esophageal mucosa by eosinophilic granulocites, with gastroesophageal reflux disease (GERD), eosinophilic esophagitis (EoE) and proton-pump-inhibitor-responsive esophageal eosinophilia (PPI-REE) being the most prevalent. Proton-pump-inhibitor-responsive esophageal eosinophilia (PPI-REE) is a newly recognized entity that must be differentiated from eosinophilic esophagitis (EoE).
Case presentation: A 7-year old Slovenian male presented with a few-month history of chest pain, regurgitation and heartburn. First endoscopy was performed and revealed pronounced longitudinal furrows, and on hystology examination > 70 eosinophils per high power feld were found through the entire thickness of epithelium and in the submucosis with eosinophilic microabscess formation. Results of 24-hour pH-monitoring (without impedance monitoring) excluded pathologic acid reflux. All allergy tests were negative. Te patient started treatment with proton pump inhibitors (PPIs) for three times, twice with pantoprazole before the endoscopy and once with esomeprazole after it to exclude the diagnosis of GERD and PPI-REE. Urinary incontinence reappeared each time just few days after starting treatment and disappeared few days after stopping it. Therefore, urinary incontinence was considered as a plausible adverse effect of therapy with PPIs. As treatment with PPIs was not tolerated, a therapy with H2-receptor antagonists ranitidine was applied for more than 2 months followed by a second endoscopy. Both symptoms and esophageal eosinophilia completely resolved with ranitidine. The resolution of esophageal eosinophilia in PPI-REE has been attributed to proton pump independent antiinflammatory effects of PPIs. No such effects have been described in H2-receptor antagonists.
Conclusions: Two unique phenomena were observed in the pediatric patient with profound esophageal eosinophilia: urinary incontinence as an adverse effect of therapy with PPIs, and complete resolution of esophageal eosinophilic inflammation with typical features of EoE after treatment with H2-receptor antagonists.
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