Schwartzman-Sanarelli phenomenon /shvorts′man san′-ərel″ē/ [Gregory Schwartzman, American physician, b. 1896; Giuseppe Sanarelli, Italian bacteriologist, 1864–1940] , a condition induced experimentally in the investigation of the role of coagulation in renal disease. Animals injected twice with a bacterial endotoxin experience massive disseminated intravascular coagulation with blood clots in the vessels of the kidneys. Also called Schwartzman phenomenon.