Aneurysm of the membranous portion of the ventricular septum.

From the Departmenit of Medicine ( 1)ivisioi of Cardiology), the Heart Research Center, the Department of Radiology, Indiana University School of Medicine and the Krannert Heart Research Institute, Marion Couinty General Hospital, Indianapolis, Indiana. Supported hy the Herman C. Krannert Fund, the Indiana Heart Association, Indiana State Board of Health and (in part) by U. S. Public Health Service Training Grant 5363 and (in part) with facilities provided l)y Cardliovascular Clinical Research Center Grant H-6308 from the National Heart Institute, National Instituites of Health, U. S. Public Health Service. world's literature. Tley added two cases of their own.. We have been. able to finid 17 cases reported suilsequientlyv!) of whiclh three were dliagnose(1 prior to (leatli, orsurgery by imeans of cineangiograply."' '. 12 e wislh to present a fourth ease diagnosed bly einieauigiography that was manifested clinically by a loud holosystolie muirmuir in spite of absence of an irntracardiae shlunt or valvuilar lesion.