The shape of the normal and that of the tuberculous chest are so strikingly different that a study of their diameters proves very interesting. A few years ago, while examining chests at the University dispensary, it appeared to me that the tuberculous chest was not flat, as is still a common belief, but rather round. This led me to carry on a series of measurements on normal and tuberculous chests, and I reported my observations in The Journal of the American Medical Association in 1927.1
Since that time I have made further observations on the contour of normal and of tuberculous chests and shall report them at this time. To make myself clearer, however, I shall give a brief review of my previous report.
The thoracic index, which is the ratio of the anteroposterior diameter to the transverse at the nipple line, was found to be greater in the tuberculous
WEISMAN SA. FURTHER OBSERVATIONS ON THE CONTOUR OF NORMAL AND OF TUBERCULOUS CHESTS. Arch Intern Med (Chic). 1929;44(1):29–36. doi:10.1001/archinte.1929.00140010032003