The width of the pharyngo-esophageal junction area.

In order to elucidate the pharyngo-esophageal segment in normal and abnormal conditions the width of the pharyngo-esophageal junction area on three different levels: hypopharynx, infracricoid segment of the cervical esophagus (ICCO) and cervical esophagus was measured in 150 non-dysphagial volunteers and in 252 dysphagial patients examined with cineradiography during barium swallowing. The result indicates that a narrow ICCO in absolute figures reflects the size of the swallowed bolus and is not a predictor of pharyngeal abnormality, per se. However, when the width of the ICCO in a.p. projection is less than 3/4 of the width in lateral projection this can indicate a narrow ICCO and should lead to endoscopy for further evaluation.