[Aortic insufficiency caused by incomplete rupture of the ascending aorta. Conservative surgical treatment].

Commissural disorganisation secondary to incomplete rupture of the ascending aorta was found at surgery for massive aortic incompetence in a young man with previous hypertension. The lesions were repared by a conservative procedure with an excellent result 3 years after surgery. Incomplete spontaneous rupture of the ascending aorta occurs in the same terrain as dissection of the aorta (hypertension, aortic media necrosis) of which it represents a minor form. It may remain asymptomatic but it is usually complicated either by secondary intrapericardial rupture, by aortic aneurysm or by aortic incompetence due to valvular prolapse. When valvular prolapse is associated with another lesion which aggravates the regurgitation (aortic valve disease, aortic ring dilatation) aortic valve replacement should be performed with a prosthesis; on the other hand, when commissural disorganisation giving rise to valvular prolapse is the cause, a conservative procedure may be envisaged.