Abstract
Acute focal bacterial nephritis (AFBN), reported by Rosenfield et al., has many points of clinical deference between the pyelonephritis. Based on clinical features, we were investigated about mid-term outcomes and risk of the AFBN. Fever was found in all patients, pyuria was not observed in the four patients and urine culture was negative in three patients. Renal enlargement in four patients and tumor in 1 patient which was known as characteristics of AFBN, were pointed out by ultrasound sonography. 5/8 patients had a vesicourethral reflux, 4/5 patients had low renal uptake of 99mTc-DMSA. Break through infection (BTI) was developed in two patients who had Bladder and bowel dysfunction (BBD), Hutch diverticulum and posterior urethral stricture. It was suggested to become risk to recurrent AFBN. In this examination, the contrast-enhanced CT was recognized as test necessary for a diagnosis because of ratio of false-negative in the ultrasound Sonography for AFBN was high with 45%. In the past reports, urinary tract abnormality and BBD were seen with 4–67% and BTI were seen with 13–67%. We concluded AFBN was good outcomes in the mid-term for reasons of 9/11 patients had no BTI and all patients had no renal dysfunction during three years.
