[A case of septic pulmonary embolism showing the rapid appearance of multiple cavities in both lung fields induced by urinary tract infection].

A 69-year-old man who had benign prostatic hypertrophy and hypertension was admitted to our hospital because of urinary retention and high grade fever. Chest radiograph showed the appearance of multiple cavitating nodules in both lung fields within a few days after admission. Staphylococcus aureus was isolated in blood and sputum cultures, though there were no pathogens in urine culture. Abdominal CT demonstrated bilateral hydronephrosis. Since we could not detect any other infectious focuses such as bacterial endocarditis, septic thrombophlebitis etc., we reached the diagnosis of septic pulmonary embolism (SPE) induced by urinary tract infection (UTI). After diagnosis, the patient was given intravenous meropenem, ciprofloxacin, sulbactam/ampicilin, and recovered. Although several cases of SPE induced by UTI in diabetes mellitus patients have been reported, the present case who had no severe underlying disorder is very rare.