Symptomatic heterotopic gastric mucosa in the upper oesophagus

Heterotopic gastric mucosa of the proximal esophageal (HGMPE) and its potential role in pediatric dysphonia and dysphagia

OBJECTIVE

Despite a reported incidence of HGMPE of 10%, proof of acid production, and an increased incidence of respiratory symptoms, the pediatric otolaryngology, swallowing and voice care literature is silent on this entity. This case series describes pediatric patients confirmed to have HGMPE with dysphonia and/or dysphagia.

METHODS

Retrospective case series of Pediatric Voice, Resonance, and Swallowing Center patients at a tertiary Children's Hospital in 2019.

SETTING

Tertiary academic medical center.

SUMMARY OF RESULTS

Three patients who underwent triple endoscopy for dysphonia or dysphagia were histologically diagnosed with HGMPE. Esophageal biopsies were otherwise normal. Two of the three patients resolved their primary aerodigestive symptoms following treatment with acid suppression and a protectant (sucralfate). The third patient reported significant improvement in symptoms by phone. The significance of this case series cannot be understated: 1) A need for increased awareness among pediatric otolaryngologists, voice care and swallowing professionals of this entity given its relatively common incidence of 10% offset by a dearth of presentations & scientific publications in our literature clearly exists. 2) Otolaryngologists have abandoned operative upper aerodigestive tract endoscopy in lieu of office-based less comprehensive videolaryngostroboscopy and fiberoptic endoscopic evaluation of swallowing. HGMPE & other esophageal disorders (i.e. eosinophilic esophagitis) support revisiting triple endoscopy in select patients where office endoscopy has failed to diagnose and successfully treat such patients. 3) Both acid suppression therapy and a protectant (sucralfate) may be useful in these patients. 4) Modification of rigid esophagoscopy technique to carefully assess the introitus and superior esophageal segment is paramount 5) Otolaryngologists over-diagnose & over-treat laryngopharyngeal reflux. The pediatric & adult literature is replete with significant safety warnings associated with acid suppression therapy and guidelines admonish their indiscriminate use, raising the liability bar of empiric treatment. Large scale prospective, randomized and controlled studies are needed to confirm the pathophysiologic role of this entity in pediatric aerodigestive disorders.

CONCLUSION

HGMPE is a clinical entity that can be easily missed upon swift entry into the esophagus with rigid endoscopy. Careful scrutiny and visualization of the proximal esophagus is critical in order to identify HGMPE, as there is a higher rate of laryngospasm, stricture, and potentially neoplasm in this population.

Frequency, histopathological findings, and clinical significance of cervical heterotopic gastric mucosa (gastric inlet patch): a prospective study in 300 patients

The frequency and clinical significance of heterotopic gastric mucosa in the upper esophagus is not sufficiently known. Heartburn or dysphagia could result from mucin and/or acid production in this area. We undertook a prospective study in 300 patients with special attention of the endoscopist to this area. Moreover, clinical symptoms were determined by questionnaire before performing endoscopy. A total of 33/300 (11%) of patients had at least one histologically proven gastric inlet patch without gender or age preference. In 20/33 (61%) cases, the heterotopic gastric mucosa was classified as mixed type, in 8/33 (24%) as oxyntic, and in 5/33 (15%) as mucoid. Helicobacter pylori was present in none of the cases. There was no significant association to the presence of a hiatal hernia, reflux esophagitis, Barrett's esophagus, or gastric/duodenal ulcer. Moreover, there was no association to the reported grade of heartburn in the upper or lower part of the esophagus, recurrent hoarseness, or dysphagia. When thoroughly performed, heterotopic gastric mucosa is a quite frequent finding in endoscopy of the upper gastrointestinal tract. The presence of this gastric mucosa in the upper third of the esophagus seems to be rarely the cause of clinical symptoms and little prone to complications.

Heterotopic gastric mucosal patch of the esophagus is associated with higher prevalence of laryngopharyngeal reflux symptoms

Laryngopharyngeal reflux (LPR) is common in clinical practice. Heterotopic gastric mucosal patch of the proximal esophagus (HGMP) is reported to cause LPR symptoms. This study assessed the prevalence of LPR symptoms and correlation with the size of HGMP. Four hundred and sixty-two patients undergoing endoscopy were carefully questioned regarding LPR symptoms experienced in the previous 12 weeks. The size of the HGMP was assessed and documented during endoscopy. Clinicopathological classifications were assigned (types I-V) accordingly. HGMP [median one patch (range 1-3), median size 15 mm [3-35] was detected in 26 (19 HGM type I and 7 HGM type II] patients giving a prevalence of 5.6%. Among the indications, there were significantly more LPR symptoms as referral indications among patients with HGMP. There were no significant differences in the endoscopic findings. On specific enquiries, significantly more HGMP patients had experienced any LPR symptoms (73.1 vs. 25.9%, p < 0.001) specifically chronic cough (p = 0.002), throat discomfort/hoarseness (p < 0.001), globus sensation (p = 0.004), regurgitation (p < 0.001). HGMP patients also had more heartburn (p = 0.001). Larger HGMP (≥ 15 mm) was only associated with more chronic cough (p = 0.022). In conclusion, patients with HGMP have significantly more LPR symptoms. However, most were mild and detected through specific enquiries. Interestingly, the size of HGMP did not significantly affect the prevalence of LPR symptoms.

Heterotopic gastric mucosa: a significant clinical entity

OBJECTIVE

Despite the apparent lack of clinical interest in the inlet patches of heterotopic gastric mucosa (HGM) in the upper esophagus, the literature contains reports of complications associated with HGM. The aim of this study was to determine the prevalence and clinical importance of HGM in patients referred for upper gastrointestinal endoscopy (UGE).

MATERIAL AND METHODS

A total of 1033 consecutive outpatients referred for UGE were prospectively evaluated. Clinical, endoscopic and histologic findings were analyzed and 24-h double-channel pH-metry was performed on 20 patients with HGM.

RESULTS

Fifty-three patients (5.1%) had HGM lesions. Dysphagia was significantly more frequent in HGM patients (21% versus 4%; p<0.001). Five of the 20 patients who underwent pH-metry presented with acid secretion from HGMs. These five patients had inlet patches of greater size.

CONCLUSIONS

HGMs of the upper esophagus are not infrequent, although generally small and asymptomatic. In cases of large HGMs, acid secretion capacity may cause upper esophageal disorders.

Inlet patch: heterotopic gastric mucosa--another contributor to supraesophageal symptoms?

OBJECTIVE

To determine prospectively the incidence of an inlet patch (IP) in children requiring esophagogastroduodenoscopy (EGD) and assess the prevalence of presenting symptoms between children with and without an IP.

STUDY DESIGN

All patients undergoing EGD in a 2-year period were assessed for the presence of an IP with biopsy confirmation. IP, distal esophagus, and stomach biopsy specimens were blindly reviewed by a pathologist for the presence and degree of inflammation and intestinal metaplasia. Symptoms from children with and without an IP were compared.

RESULTS

From 407 EGDs done by a single endoscopist, 24 patients had confirmed IP (incidence of 5.9%). The presence and degree of inflammation were always relatively greater in the columnar mucosa of the IP than in the antral/body gastric mucosa in the same patient (P = .0027) Inflammation was similar in the squamous epithelium around the IP and in the distal esophagus (P=.46). Two patients had intestinal metaplasia of the IP. The patients with IPs had a higher prevalence of respiratory symptoms than the control group (P = .03).

CONCLUSIONS

Children with IPs may have a higher frequency of respiratory symptoms. Periodic surveillance should be performed in children with intestinal metaplasia of an IP.

Helicobacter pylori and hetertopic gastric mucosa in the upper esophagus (the inlet patch)

OBJECTIVES

Helicobacter pylori (H. pylori) may colonize gastric mucosa wherever it is found in the GI tract. Heterotopic gastric mucosa in the upper esophagus (inlet patch) is a potential site for H. pylori infection and may provide a reservoir for oral-oral transmission or a niche where antibiotics might have difficulty reaching. The aim of this study was to analyze the intensity and distribution of H. pylori in the inlet patch.

METHODS

Whenever a cervical inlet patch was observed, mucosal biopsy samples were taken to confirm the endoscopic diagnosis and to search for H. pylori and active inflammation. In addition, mucosal biopsy samples were also taken from the gastric mucosa. Formalin-fixed biopsy specimens were cut and stained with a new dual stain developed in our laboratory. The stain is a combination of periodic acid-Schiff and a silver stain that allows simultaneous visualization of H. pylori and gastric type epithelium. The density of H. pylori was scored using a visual analog scale of 0 to 5. The type of mucosa in the inlet patch was also recorded.

RESULTS

The study included 48 patients; 37 had H. pylori gastritis and 27 of these (73%) had H. pylori identified on their heterotopic gastric mucosa. A higher density of H. pylori in the stomach was associated with a higher prevalence in the inlets. Active inflammation correlated with active infection in the inlet patch and the presence of antral type mucosa.

CONCLUSION

H. pylori colonization of heterotopic gastric mucosa in the upper esophagus is common and is closely related to the H. pylori density in the stomach. The fact that H. pylori was not found in all cases suggests that another event such as reflux may be required for H. pylori to colonize heterotopic mucosa.

Heterotopic gastric mucosa in the upper esophagus after repair of atresia

One year after neonatal repair of esophageal atresia, a boy had intermittent mild dysphagia. Rigid esophagoscopy showed what was thought to be some inflammation at the level of the anastomosis but, at 5 years of age, with flexible esophagoscopy, this was identified as a ring of heterotopic gastric mucosa. This ring of mucosa has remained stable with surveillance up to 9 years of age. Although islands of heterotopic gastric mucosa in the esophagus are well recognized, there are no published reports of this at the level of an anastomosis for esophageal atresia with its associated clinical implications.