Among intravenous urograms done in 100 consecutive acute pyelonephriti
s patients, 26 (26%) showed urologic abnormalities, including 15 major
defects of which some had an impact on treatment decisions. The 74 re
maining urograms were normal, Patients older than 50 years were more l
ikely to have an abnormal urogram than patients younger than 50 years
(50% vs 18.4%, p<0.05). Persistent pathologic leukocyturia at treatmen
t completion was predictive of an abnormal urogram. The results of thi
s study support careful selection of patients requiring an intravenous
urogram.