Escherichia coli grew in a urine culture. The patient was prescribed broad-spectrum antibiotics (piperacillin and tazobactam), with significant clinical improvement. She was discharged 10 days later.

Xanthogranulomatous pyelonephritis (XGP) is classically characterized by unilateral renal enlargement, decreased renal function and the presence or history of a renal stone. There is diffuse ...