METHODS Literature review of full-text articles from PubMed on patients with duodenal perforation from a fish bone was performed. Ingestion of foreign bodies is a rather frequent presentation to the emergency department.1,2 Fish bone is one of the most common foreign bodies identified, accounting for about 60% of all cases. GLO:1738/01nov21:ash12525-fig-0003.jpg PHOTO (COLOR): 3 The fish bone was removed via a left subcostal incision gl GLO:1738/01nov21:ash12525-fig-0004.jpg PHOTO (COLOR): 4 The fish bone on a ruler scale gl DISCUSSION Perforated duodenum secondary to a fish bone is uncommon. The MeSH Terms used in PubMed were "duodenum", "perforation" and "fish bone.". [Extracted from the article]