Stomach
Other non-neoplastic lesions
Bezoars

Author: Elliot Weisenberg, M.D. (see Authors page)

Revised: 29 November 2016, last major update August 2012

Copyright: (c) 2003-2016, PathologyOutlines.com, Inc.

PubMed Search: gastric bezoar
Cite this page: Bezoars. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/stomachbezoar.html. Accessed December 8th, 2016.
Definition / General
  • Foreign bodies composed of hair or vegetable matter
  • Motility abnormalities and obstructions predisopose to bezoar formation, may complicate diabetes mellitus, myotonic muscular dystrophy, chronic drug therapy (opiates, neuromuscular blockers)

  • Phytobezoars:
    • Plant material concretions
    • Usually caused by ingestion of unripened persimmons
    • Stomach acid causes polymerization of tannin monomers in fruit, causing a tannin-cellulose-hemicellulose-protein complex
    • Dissolves with cellulase (Arch Pathol Lab Med 1980;104:159)

  • Trichobezoars:
    • Also known as hairballs
    • Ingested hair coated with decaying food
    • Associated with partial gastrectomy, partial outlet obstruction, lack of teeth, vagotomy, trichophagia
Gross Images

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Bezoar