# Diagnosis of gastric mucosal choristoma of the tongue: A case report

## TL;DR

This case report describes a rare benign tumor of the tongue containing gastric tissue, diagnosed through surgery and pathology.

## Contribution

Adds a new documented case of gastric mucosal choristoma of the tongue and emphasizes the need for accurate diagnosis.

## Key findings

- The tumor was confirmed as gastric mucosal choristoma through histopathological examination.
- Complete surgical excision led to a successful outcome with no recurrence.
- The case highlights the importance of considering rare diagnoses in tongue nodules.

## Abstract

Gastric mucosal choristoma of the tongue is an extremely rare benign tumor characterized by ectopic gastric mucosa in the tongue. Since first reported in 1927, only around 100 cases have been documented. Herein, we investigated an adult case of Gastric mucosal choristoma who was referred to an ENT clinic with a chief complaint of a solid tumor at the posterior portion of the tongue.

A 32-year-old female presented with a posterior tongue mass initially noticed years ago that progressed over months. A surgical excision was performed. Microscopic examination revealed a gastric mucosal choristoma, with glandular structures resembling gastric mucosa. The postoperative course was uneventful.

Lingual gastric choristoma is uncommon but deserves mention due to its rarity. The pathogenesis is unknown but likely represents developmental heterotopia. Clinically, lesions present as asymptomatic tongue nodules often mistaken for more common entities. Thus, histopathology is essential for diagnosis. Microscopy shows gastric mucosa with fundic glands, parietal cells, chief cells, and foveolar epithelium in tongue squamous epithelium.

Gastric choristoma should be considered when evaluating tongue nodules to guide management. Increased awareness of this rare entity can enable accurate diagnosis and treatment. Complete surgical excision is curative with an excellent long-term prognosis. Further study of pathogenesis can elucidate optimal management.

•Rare case of gastric mucosal choristoma in the tongue, presenting as a solid tumor.•Surgical excision under general anesthesia with meticulous wound closure achieved optimal outcomes.•Pathological examination confirmed gastric mucosal origin, highlighting distinctive glandular structures.•Long-term follow-up showed no recurrence or complications, emphasizing successful management.•Illustrates the importance of accurate diagnosis and management of uncommon lingual masses.

Rare case of gastric mucosal choristoma in the tongue, presenting as a solid tumor.

Surgical excision under general anesthesia with meticulous wound closure achieved optimal outcomes.

Pathological examination confirmed gastric mucosal origin, highlighting distinctive glandular structures.

Long-term follow-up showed no recurrence or complications, emphasizing successful management.

Illustrates the importance of accurate diagnosis and management of uncommon lingual masses.