Observations on the hypopharynx and cricopharyngeus area:  a plea for greater accomplishment in esophagological procedures and an illustration of transesophagoscopic retrograde dilation.
D004240:Diverticulum; D004936:Diverticulum, Esophageal; D004945:Esophagoscopy / Q000150:complications*; D004947:Esophagus; D006801:Humans; D007013:Hypopharynx; D010609:Pharyngeal Muscles
ESOPHAGOSCOPY/complications; ESOPHAGUS/diverticula