Clin Exp Otorhinolaryngol.  2009 Jun;2(2):103-105. 10.3342/ceo.2009.2.2.103.

Gastric Choristoma of the Oropharynx

• Chang H
• Ahn Y
• Lim YS
• Hah JH

• KMID: 2007194
• DOI: http://doi.org/10.3342/ceo.2009.2.2.103

Abstract

Heterotopic gastric mucosa tissue is also called gastric choristoma, and this type of lesion can be found anywhere in the alimentary tract. However, gastric choristoma in the pharynx is very rare; only 10 cases of pharyngeal gastric choristoma have been reported in the English medical literature. A 32-yr-old woman was referred to our institution for the evaluation of a large mass that originated from the posterior wall of the oropharynx. The mass did not cause any symptoms except for the occasional sensation of a foreign body. Gadolinium-enhanced T1 weighted imaging showed a 5 cm-sized mass with central enhancement and hypointense portions, yet the radiological diagnosis was not clear. Transoral mass excision was performed with using electrocautery for making the diagnosis and for treating the mass. The microscopic analysis revealed gastric choristoma.

Keyword

Gastric choristoma; Oropharynx; Treatment

MeSH Terms

Choristoma
Electrocoagulation
Female
Foreign Bodies
Gastric Mucosa
Humans
Oropharynx
Pharynx
Sensation

Figure

• 

  Fig. 1 Laryngoscopic examination. A huge mobile pedunculated mass (arrow) originated from the posterior oropharyngeal wall. It partially occluded the laryngeal inlet during respiration.

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  Fig. 2 MRI findings of the mass. The gadolinium-enhanced T1 weighted images showed a posterior pharyngeal wall mass with central enhancement and hypointense portions (arrows).

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  Fig. 3 Pathologic findings of the mass. (A) Gross examination shows a firm mass with a homogeneous cut surface. (B) Microscopic examination shows the junction (black arrow) between the heterotopic gastric mucosa with foveolar epithelium and the oropharyngeal squamous mucosa (hematoxylin-eosin [H & E], ×100). (C) The gastric tissue contains chief cells and parietal cells (H & E, ×200).

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