STUDIES ON ANEURYSMS

Abstract

In a previous paper we¹have presented statistical data on the incidence, relative frequency in different countries, location, race, age, sex and number of aneurysms in general, and of 321 internal aneurysms in particular which were studied postmortem at the Philadelphia General Hospital and the Hospital of the University of Pennsylvania. The present paper treats of 263 aneurysms of the aorta, with especial reference to their shape, size, position, direction and effect on neighboring structures. The aneurysms of the several customary anatomic subdivisions of the vessel are analyzed separately. The exact shape, size, location and direction of the aneurysms was not always recorded in the protocols; in our tables we have therefore stated the number of cases in which such data were obtainable. The incidence of sex and color has been stated separately in each of the several groups of aneurysms. Since, however, multiple aneurysms are of frequent occurrence