Heterotopic gastrointestinal and pancreatic tissue of the tongue: a case report

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

INTRODUCTION AND IMPORTANCE

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.

CASE PRESENTATION

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.

CLINICAL DISCUSSION

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.

CONCLUSION

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.

Oral foregut cyst in a neonate

Oral foregut cysts are congenital choristomas that arise in the oral cavity during embryonic development from remnants of foregut-derived epithelium. This is an unusual report of a neonate with a large congenital sublingual cystic lesion, extending superficially from the left ventral tongue to the anterior floor of the mouth, impeding breast-feeding. The differential diagnosis included dermoid cyst, epidermoid cyst, mucous retention cyst, and oral lymphangioma. The treatment of choice was enucleation under general anesthesia. Histology showed a cystic lesion with a ciliated pseudostratified columnar epithelium with numerous goblet cells. Immunohistochemistry was positive for cytokeratin 7 and thyroid transcription factor 1 and negative for cytokeratin 20, resulting in a final diagnosis of an oral foregut cyst. Three weeks after surgery, the tongue had healed with good mobility, and breast-feeding could be established. No recurrence was present at 6 months of follow-up.

Lingual cyst lined by respiratory and gastric epithelium in a neonate

Congenital oral cysts of foregut origin include bronchogenic, enteric, and oesophageal cysts, and they are much rarer than the well described dermoid, epidermoid, and thyroglossal cysts. The exact aetiology is poorly understood, but they are thought to arise from misplaced embryonic rests of the primitive foregut. The presentation of cysts lined by respiratory or gastrointestinal epithelium in the oral cavity is unusual. There have been previous reports of bronchogenic or gastrointestinal epithelium-lined lingual cysts, but few report both features occurring within the same cyst. In view of the scarcity of such reports, we present the case of a lesion on the ventral surface of the tongue of a newborn boy. On removal it was found to be a cyst lined by immature squamous, respiratory, and gastric body epithelium.

Lingual gastric duplication cyst in a new born

A rare case of gastric duplication cyst of tongue is reported.

Heterotopic gastrointestinal mucosa and pancreatic tissue in a retroperitoneal tumor

We believe that this is the first report of a retroperitoneal tumor consisting of heterotopic gastrointestinal mucosa and pancreatic tissue. The patient was a 19-year-old woman with the chief complaint being occasional back pain. Abdominal computerized tomography demonstrated a 3.1 x 2.5 x 3.2-cm low-density solid and cystic lesion adjoining the left renal vein between the aorta and inferior vena cava. Angiography revealed that the inferior vena cava was displaced by the hypovascular tumor. The retroperitoneal lesion was diagnosed preoperatively as a benign tumor such as a neurogenic neoplasm or lymphangioma. At laparotomy, a cystic tumor was found, which existed behind the inferior vena cava and renal vessels, and contained reddish-brown fluid, suggesting hemorrhage in the past. The cut surface of the tumor showed a unilocular cyst with partially hypertrophic wall. Histopathological examination revealed a cystic tumor lined with heterotopic gastric and duodenal mucosa, with pancreatic tissue in the muscularis propria. In addition, evidence of bleeding from the gastric mucosa was observed in the cystic tumor. External secretion from these tissues could have triggered the hemorrhage and expanded the tumor, possibly resulting in the back pain.

Cleft palate with congenital midline teratoma

A 4-year-old girl presented with hypernasal speech. On examination, in addition to velopharyngeal incompetence noted by speech examination, a palatal tumor was found in between the cleft palate. The computed tomographic and magnetic resonance imaging examinations were suspicious for midline teratoma. Total excision of the nasopalatal tumor was performed, and the pathology revealed benign teratoma. After 6 months of follow-up, no recurrence was noted. A two-flap palatoplasty with a superior-based pharyngeal flap was then performed to reconstruct the palatal defect and to correct the velopharyngeal incompetence. An anterior oronasal fistula developed after the operation, but a tongue flap was transferred to cover the defect successfully. The purpose of this case report is to present the relationship between a congenital midline nasopalatal tumor and cleft palate.

Heterotopic gastric mucosa of the oral cavity: a rare entity

OBJECTIVE

Heterotopic gastric mucosa found within the oral cavity has been reported as a rare occurrence with less than 30 cases in the English literature. We propose that this entity may not be as rare as originally described.

METHOD

Five cases of heterotopic gastric mucosa in the oral cavity were collected from three institutions.

RESULTS

Five new cases of heterotopic gastric mucosa in the oral cavity were confirmed.

CONCLUSIONS

Heterotopic gastric mucosa of the oral cavity may not be as rare as originally thought.

Pancreatic heterotopia and other uncommon causes of non-malignant biliary obstruction

The vast majority of patients developing obstructive jaundice will have an underlying malignancy. When the etiology of the obstruction cannot be defined prior to operative intervention, identification of a non-malignant process will occur only subsequent to a major operation. The clinical course of a patient with complete distal common bile duct obstruction as the result of pancreatic heterotopia is discussed. This uncommon diagnosis prompted a review of the literature on this subject enabling this detailed discussion inclusive of the embryology, prevalence and clinical presentations of this entity. Our review further identified a varied group of other non-malignant causes of biliary obstruction that may be mistakenly interpreted to represent biliary or pancreatic malignancy.

Heterotopic gastrointestinal cyst partially lined with dermoid cyst epithelium

We report a rare heterotopic gastrointestinal cyst located in the right submandibular/submental area with histopathologic features that included portions resembling a dermoid cyst. Some theories of pathogenesis are discussed, and an origin of this lesion in entrapped undifferentiated endodermal cells is suggested.

Lingual cyst with respiratory epithelium: an entity of debatable histogenesis

PURPOSE

The purpose of this report was to describe a new case of lingual cyst with respiratory epithelium, to review and analyze the literature regarding lingual cyst of foregut origin and lingual alimentary cyst, and to discuss the suitable terminology for these uncommon cysts.

MATERIAL AND METHODS

Data from articles published in the English language between the years 1942 and 1947 were used.

RESULTS

The review of the literature showed 53 lingual cysts of which 29 could be grouped into lingual alimentary tract cysts and 24 into lingual cysts of foregut origin. There was an overlap in histologic and clinical features and embryogenesis of both cysts.

CONCLUSIONS

Differentiation between both cysts cannot be supported, and until further information is accumulated it is suggested that histologic descriptive terms be used such as lingual cyst with respiratory epithelium, lingual cyst with gastric epithelium, or lingual cyst with respiratory and gastric epithelium.