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October 1946

PRECLINICAL STAGE OF INFANTILE HYPERTROPHIC PYLORIC STENOSIS

Author Affiliations

STOCKHOLM, SWEDEN
From the Pediatric Department, Norrtulls Hospital, Royal Caroline Medical School.

Am J Dis Child. 1946;72(4):371-376. doi:10.1001/archpedi.1946.02020330003001
Abstract

AS IS well known, anatomic investigations have shown that the underlying cause of infantile pyloric stenosis is a muscular hypertrophy of the pyloric canal (or canalis egestorius) in conjunction with constriction of its lumen. This constriction of the lumen of the pyloric canal and the rigidity of the walls produced by the hypertrophy can be detected in living subjects by roentgenographic examination.1 Runström,2 perhaps the foremost authority on the roentgen appearances in the disease, describes the typical features in the following manner:

In the manifest stage of the disease, with the characteristic vomiting, the pyloric canal is obstructed so that its lumen for a distance of 2 to 3 cm. is only a few millimeters in width. The evacuation time of the stomach is delayed, and the contrast medium does not start to pass out into the duodenum until after one-half to two hours. The stomach is distended,

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