Airway compromise
Aspiration pneumonia
Esophageal perforation/necrosis
Mediastinitis
Aortic perforation
Vocal cord paralysis
Bowel perforation/necrosis, fistulas, obstruction
Stricture
Infection
Ingested foreign body
Consider tracheal/lung aspiration  of foreign body
Aspirated foreign body
Oropharyngeal dysphagia
Soft tissue foreign body
CVA
Infected G-tube
Parkinson's disease