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Ectopic or heterotopic gastric mucosa has been found all up and down the
gastrointestinal tract, including the esophagus, small intestines, pancreas,
gallbladder, and Meckel's diverticulum. There have, moreover, been several
reported cases of heterotopic gastric cyst or heterotopic intestinal
cyst of the tongue or oral floor.
choristomas are either embedded deeply in the tongue or present as superficial,
movable nodules of the lingual dorsum or oral floor. Some have communication
with the surface.
Pathology and Differential Diagnosis
The cyst wall is usually composed of routine
gastric mucosa of the type seen in the body and fundus of the
stomach. Ciliated columnar epithelium and stratified squamous
epithelium may be admixed with the gastric mucosa, and a muscularis mucosae
may be present. Both parietal and chief cells may be found, and pancreatic
tissue was noted in one cyst.
Treatment and Prognosis
The heterotopic gastrointestinal
cyst of the mouth is treated by conservative excision.
Recurrence has not been reported, nor has malignant transformation. This
cyst is not associated with any known syndrome.
References (Chronologic Order)
Note: General references can be found by clicking on that topic to the left.
Daley TD, Wysocki GP, Lovas JL, Smouth MS. Heterotopic gastric cyst of the oral cavity. Head Neck Surg 1984; 7:168-171.
Lipsett J, Sparnon AL, Byard RW. Embryogenesis of enterocystomas - enteric duplication cysts of the tongue. Oral Surg Oral Med Oral Pathol 1993; 75:626-630.
Ohbayashi Y, Miyake M, Nagahata S.
Gastrointestinal cyst of the tongue - a possible duplication cyst of foregut
origin. J Oral Maxillofac Surg 1997; 55:626-628.
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