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September 1934

CONTOUR OF THE CHEST IN CHILDRENI. ACCORDING TO AGE

Author Affiliations

MINNEAPOLIS
From the Department of Medicine, University of Minnesota, and the Glen Lake Sanitorium, Oak Terrace, Minn.

Am J Dis Child. 1934;48(3):502-506. doi:10.1001/archpedi.1934.01960160024002
Abstract

For some years I have been interested in the contour of the chest in health and in pulmonary tuberculosis,1 my observations having been made almost entirely on adults. My studies led me to draw the following conclusions: 1. The normal chest is flat and wide. 2. The tuberculous chest is long, narrow, deep, undeveloped, rounded and primitive in type.

These conclusions aroused many questions. Because of the fact that the chest of the new-born is almost round, as was shown by Scammon2 (fig. 1), and that the normal chest of the adult has an average thoracic index of 67 per cent in the male and about 70 per cent in the female (fig. 2), as shown by my studies, the question arises: At what point in life does this change in contour take place? Is the change gradual from infancy to maturity, or does it take place at

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