Abstract
Part 1: Seven cases of the functional diverticula were reported. This phenomenon is characterised by two to five symmetrical, fairly deep contraction occuring simultaneously in the sub-aortic part of the esoph- agus, and causing a segmentation of the barium column with the occurence of rounded swellings between strictures. Generally this very brief contraction appears at the instant when the esophagus ordinarily prep- ares to resume its normal resting tone, and leaves the esophagus with completly smooth outline after its disappearance. Part 2: Forty cases of the tertiary contraction were reported. This phenomenon is characterised roentgenolo- gically by the serrated outline of the brrium in the esophagus, and appears generally in lower two- third of the esophagus when it is a state of semi- evacuation after the passage of the primary wave. It disappears temporarily with the arrival of the peristaltic wave on affecting part, but after passing it reappears more prominently. This is a very fleeting phenomenon, and its duration varies from one second to twelve seconds. This phenomenon is observed more frequently in older patients than younger ones, and is probably due to nervous condition or to a neuromuscular incoordination of the esophagus.
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