A preliminary autopsy showed that Northeast Missouri State's Derringer Cade, who collapsed and died during a game Saturday suffered from a rare heart disease. Cade had idiopathic hypertropic cardiomyopathy, a condition characterized by thickened walls of the heart, said Capt. Mike Milner, a Fort Leonard Wood spokesman. The autopsy was conducted at the Army base, where Cade's father, Sgt. Maj. Smith Cade, is stationed.