He has a “potentially aneurysmal dilation of my aortic root” that may kill him, if a possible brain tumor does not end him first.

Shortly after, doctors discovered a noncancerous aneurysmal bone cyst in Cheyenne’s neck that required extensive surgery and rehabilitation.

Pyogenic.—Non-suppurative inflammation of the coats of an artery may so soften the wall of the vessel as to lead to aneurysmal dilatation.