Eosinophilic oesophagitis is a chronic, immune/antigen-mediated oesophageal disease, only recently, but increasingly, recognised in the world literature. It is diagnosed and managed primarily by medical gastroenterologists and allergy specialists, and is a distinct disease entity, affecting both children and adults. Few studies have been published in otolaryngology journals, although otolaryngologists will encounter patients with undiagnosed eosinophilic oesophagitis. Patients may present with dysphagia, bolus obstruction or with other ENT disorders, such as atopic rhinitis, reflecting the underlying systemic allergic disorder.

This paper systematically reviews the evidence base published on the epidemiology, clinical presentation, diagnosis, treatment and prognosis of eosinophilic oesophagitis, particularly as it relates to otolaryngology practice.

There is growing evidence to suggest that reflux (both laryngopharyngeal and gastroesophageal) has a role in the development of upper aerodigestive tract squamous cell carcinoma. This study discusses the role of identifying reflux in this patient group, and its prevalence.

Prospective review of patients with head and neck cancer undergoing flexible oesophagogastroscopy as part of their diagnostic investigation.

Forty-five consecutive patients were identified. All patients were found to have evidence of oesophagitis, with 28 having oesophageal erosions and two Barrett's oesophagitis.

Flexible oesophagogastroscopy is a useful test in patients with upper aerodigestive tract squamous cell carcinoma.

There is growing interest in the presence of Helicobacter pylori in the upper aerodigestive tract, and in the middle ear in patients with otitis media with effusion. Some studies have reported detecting H pylori in the middle ear, although reports to the contrary exist. In this study, we critically evaluate the evidence for the theory that H pylori in the middle ear plays a role in otitis media with effusion.

We undertook a systematic review of all available studies investigating the presence of H pylori in the middle ear of patients with otitis media with effusion. The current literature was critically analysed using the key words and phrases ‘Helicobacter pylori’ ‘otitis media with effusion’, ‘serous otitis media’, ‘glue ear’ and ‘middle ear’. Six original research papers were identified, studying a total of 203 patients and 27 controls; two of these papers were randomised, controlled studies and four were prospective, cohort studies.

At present, there is poor evidence for the existence of H pylori-associated otitis media with effusion.

Further research in the field is needed in order to delineate the presence of H pylori and its role in the pathogenesis of otitis media with effusion.