While a most thorough knowledge regarding the pathology of renal infarct exists to-day, as a result of the classical studies of Virchow, Rokitansky, Cohnheim, Litten, Ribbert and others, very little has been said or written about its clinical manifestations. This undoubtedly must be attributed to the fact that renal infarct, as a clinical entity, is extremely rare, and that, while small infarcts are not infrequently found postmortem, they are very rarely manifested clinically. To quote Senator: "Symptoms referable to hemorrhagic infarction of the kidney are rarely observed unless the infarcts are unusually large or numerous, when there may be well marked symptoms, of which sudden pain in the corresponding kidney, aggravated by pressure, and the appearance of blood and hemoglobin in the urine, are somewhat characteristic." Leube makes the following statement: "Cases where hemorrhagic kidney infarcts were diagnosed antemortem are very rare. I was able to diagnose the condition in