A magnesium oxide bezoar

Masaya Iwamuro, Shunsuke Saito, Masao Yoshioka, Haruo Urata, Kumiko Ueda, Kazuhide Yamamoto, Hiroyuki Okada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A 75-year-old Japanese woman presented with nausea and appetite loss. Computed tomography showed a radiopaque substance in the stomach. Esophagogastroduodenoscopy revealed bezoars in the stomach, which were endoscopically retrieved. The bezoars were mainly composed of magnesium and oxide. Although bezoar formation associated with magnesium oxide consumption is infrequently encountered, the present case indicates that pharmacobezoar should be considered among the differential diagnoses in patients who demonstrate a radiopaque mass in the digestive tract and have a history of magnesium oxide use.

Original languageEnglish
Pages (from-to)3087-3091
Number of pages5
JournalInternal Medicine
Issue number21
Publication statusPublished - 2018


  • Bezoar
  • Esophagogastroduodenoscopy
  • Laxative
  • Magnesium oxide

ASJC Scopus subject areas

  • Internal Medicine


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