[Dysontogenic cyst of the tongue lined with heterotopic gastrointestinal mucosa].

A dysontogenetic cyst in the edge of the tongue in 1-year old boy was found lined with gastric, duodenal, and intestinal mucosa with its own lamina muscularis mucosae, with a thin layer of submucous connective tissue encircled by bundles of smooths muscle imprecisely separated from the striated lingual muscle.