Preventing Esophageal Strictures After Endoscopic Resection

Endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD) have changed the management of early oesophageal neoplasia. They can remove selected lesions while preserving the oesophagus, avoiding the greater physiological burden of major surgery. The trade-off is that healing across a broad mucosal defect may produce fibrosis and a narrowing that makes swallowing difficult.

For Australian gastroenterologists, surgeons, nurses and trainees, stricture prevention is an important part of post-resection planning. The principles discussed through international education, including the virtual 2021 ISDE congress, apply across metropolitan services in Sydney, Melbourne, Brisbane and Perth, as well as to patients travelling long distances from regional and remote areas for specialist care.

Why Strictures Develop

The risk of benign oesophageal stenosis rises when EMR or ESD leaves a large circumferential defect. Resection involving more than half of the lumen circumference carries meaningful risk, while defects approaching or exceeding three quarters of the circumference are particularly concerning. Lesion length, location, repeated procedures and deep thermal injury can also affect healing.

Inflammation, ulcer formation and subsequent collagen deposition gradually reduce the lumen. Symptoms may not appear immediately; patients can initially tolerate liquids and soft foods before developing progressive dysphagia. Pain on swallowing, food sticking, regurgitation and unintentional weight loss should prompt early assessment rather than waiting for complete obstruction.

Assessing Individual Risk

The resection report should document the longitudinal length and circumferential extent of the mucosal defect, the technique used, haemostasis, suspected depth of injury and whether the muscular layer was exposed. These details help the treating team decide whether preventive therapy and closer surveillance are warranted.

Patient factors also matter. Previous radiotherapy, active reflux, poor nutritional status, diabetes, smoking and delayed healing may complicate recovery. A clear discharge plan is especially important when a patient returns to a regional centre after treatment in a tertiary hospital. Communication with the local general practitioner and referring gastroenterologist can prevent delays if swallowing deteriorates.

Medical Prevention Strategies

For extensive defects, corticosteroid therapy is commonly considered. Intralesional triamcinolone injections placed around the ulcer margin may reduce fibrotic contraction, while systemic steroids have also been studied in selected high-risk cases. Evidence varies between protocols, and treatment must account for infection risk, diabetes, ulcer healing and other contraindications.

Acid suppression with a proton pump inhibitor is generally used to support ulcer healing and reduce reflux-related irritation, although it should not be presented as a complete solution to stricture formation. In Australia, medication selection and subsidy may influence adherence, so discharge prescriptions and follow-up should be practical for patients using public hospitals, private services or rural pharmacies.

Protecting The Healing Surface

Mechanical and biological barriers are being used to shield the post-resection ulcer. Polyglycolic acid sheets, fibrin-based sealants, autologous tissue coverings and cell or peptide-based materials have been investigated, particularly for very large defects. Some approaches require specialised equipment or expertise and may not be routinely available outside high-volume centres.

The choice depends on local experience, lesion characteristics and the resources of the hospital. International learning networks, including this Japanese endoscopy resource, may expose clinicians to technical developments, but methods should be adopted only after reviewing current evidence, regulatory considerations and institutional governance requirements.

Dilation And Early Follow-Up

When narrowing develops, endoscopic balloon dilation or bougie dilation is usually the main treatment. Several carefully spaced sessions may be needed, and the risk of perforation should be discussed. Dilation is more effective when undertaken before severe malnutrition, dehydration or complete food impaction occurs.

Follow-up should combine symptom review with a low threshold for endoscopy in high-risk patients. A structured telephone check, nurse-led review or early outpatient appointment can identify worsening dysphagia. For patients from Adelaide, Hobart, Darwin or remote communities, telehealth coordination and planned travel may reduce missed reviews, while urgent pathways are needed for food bolus obstruction or inability to swallow fluids.

Building A Multidisciplinary Plan

Prevention begins before resection. The endoscopist, pathologist, surgeon, oncologist, dietitian and nursing team should agree on whether EMR or ESD is suitable, how much tissue can safely be removed and what rescue options are available. Large lesions may benefit from discussion at a multidisciplinary meeting, particularly when organ preservation must be balanced against stricture risk.

Patients should receive plain-language instructions about diet progression, analgesia, reflux treatment and warning symptoms. Australian services also need to account for differences between public and private waiting systems, interpreter access and the cost of repeated travel. Registration and educational information from the ISDE congress reflects the value of shared international discussion in refining care pathways for oesophageal disease.

Successful prevention is rarely achieved by one intervention alone. Careful patient selection, accurate measurement of the mucosal defect, appropriate steroid or barrier therapy, acid suppression and timely surveillance work together. The key point to remember is that a large post-resection defect should trigger a planned stricture-prevention pathway before dysphagia begins.