Abstract
Esophageal bezoars are rare but are known to occur in patients with structural or functional abnormalities of the esophagus. Additionally, sucralfate and casein containing enteral feeding formulas have been implicated in the formation of esophageal bezoars, particularly in the setting of decreased esophageal pH. We present a case in which a patient with functional impairment of the esophagus related to myasthenia gravis developed an esophageal bezoar. Gastroesophageal reflux, altered esophageal pH, and direct instillation of feeding formula through a rent in the feeding tube were additional factors likely leading to bezoar formation in this patient. Endoscopic examination revealed puttylike material consistent with coagulated enteral feeding formula. An esophagram demonstrated a large bezoar filling the middle and distal thirds of the esophagus. The conditions predisposing to bezoar formation and the proposed mechanisms are discussed. We also summarize the reported cases of esophageal bezoars related to enteral feeding formula, sucralfate, or both.
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