Congenital esophageal stenosis

Congenital esophageal stenosis (CES) is a rare congenital malformation characterized by an intrinsic narrowing of the esophagus that is present from birth. The condition affects the gastrointestinal system, specifically the esophagus (the tube that carries food from the mouth to the stomach). CES is classified into three histological subtypes: tracheobronchial remnants (TBR), which is the most common form involving cartilaginous or respiratory tissue within the esophageal wall; fibromuscular stenosis (FMS), involving thickening of the muscularis mucosa and submucosa; and membranous web, a thin mucosal diaphragm partially obstructing the esophageal lumen. The stenosis most commonly occurs in the distal third of the esophagus. Key symptoms typically present during infancy or early childhood, often when solid foods are introduced into the diet. Clinical features include dysphagia (difficulty swallowing), regurgitation, vomiting, food impaction, choking episodes, failure to thrive, and recurrent aspiration pneumonia. Some patients may not be diagnosed until later in childhood if symptoms are mild or attributed to other causes such as gastroesophageal reflux disease. CES may occur in isolation or in association with other congenital anomalies, particularly esophageal atresia with or without tracheoesophageal fistula. Diagnosis is typically established through barium swallow studies, esophagoscopy, and endoscopic ultrasound, which can help differentiate between the subtypes. Treatment depends on the subtype and severity. Membranous webs and fibromuscular stenosis may respond to endoscopic balloon dilation, which is often the first-line treatment. However, tracheobronchial remnants containing cartilage are generally resistant to dilation and typically require surgical resection of the stenotic segment with primary anastomosis. Prognosis is generally favorable with appropriate treatment, and most patients achieve normal swallowing function after intervention.

Common questions about Congenital esophageal stenosis