Familial abdominal aortic aneurysms.

The case histories of three brothers, the only siblings of one family, all of whom underwent surgery for the treatment of a previously asymptomatic ruptured abdominal aortic aneurysm, are recorded. The possibility of underlying constitutional and hereditary factors is discussed and the suggestion of a primary familial incidence of atheromatous, nondissecting aortic aneurysm is raised.