Aerodigestive fistulas in adults: a focus on airway interventions and review of recent literature.

Abstract

Purpose of review: Aerodigestive fistulas (ADFs) cause significant morbidity and mortality, especially in advanced malignancies. This review summarizes current knowledge on etiology, diagnostic, and management strategies.

Recent findings: Esophageal carcinoma is the predominant cause of malignant ADFs with their development influenced by tumor location, most often involving the upper and middle thirds of the esophagus, and by prior interventions such as radiotherapy or esophageal stenting.Benign acquired ADFs typically result from iatrogenic injuries including pressure necrosis from cuffed tubes, stent erosion, endoscopy, and surgery. Diagnosis often is delayed by nonspecific symptoms, requiring combined imaging and endoscopic evaluation. Benign ADFs are typically amenable to surgical repair, whereas malignant fistulas usually require individualized palliation, notably airway and esophageal stenting. Dual airway-esophageal stenting has advantages over single stenting for malignant ADFs due to superior quality of life and survival outcomes. Emerging minimally invasive techniques include endoscopic clips, occluder devices, and tissue adhesives.

Summary: Optimal management of ADFs requires high clinical vigilance, timely diagnostic evaluation, and individualized multidisciplinary approaches. Further research into emerging therapies and standardized management algorithms is essential for improving patient outcomes and guiding evidence-based clinical practice.