Aneurysms of the sinus of Valsalva are rare, with dissecting aneurysms
of the sinus of Valsalva that extend into the interventricular septum
being even more rare. This report describes a young patient with
syphilis and a quadricuspid aortic valve who experienced a spontaneously
dissecting aneurysm of the sinus of Valsalva and the basal
interventricular septum.