Emphysematous Pyelonephritis Due to Prevotella bivia

Prevotella bivia, an anaerobic organism known for causing obstetric-gynecologic infections, is now gaining notoriety for its increased detection in various nonobstetric infections. Although a limited number of nonobstetric cases of P. bivia–causing infection have been reported to date, so far no cases have been reported for P. bivia as a cause of pyelonephritis. We present a rare case of P. bivia causing the rare condition of emphysematous pyelonephritis.