Renal abscess is a rare complication of pyelonephritis known to be linked to recurrent urinary tract infections, anatomical abnormalities, obstruction, and the immunocompromised. Symptoms can be very nonspecific such as fever, chills, and abdominal or flank pain, which makes it more challenging to diagnose; however, this has been made easier with the help of medical imaging. Persistently spiking fevers despite antibiotics should prompt a review for possible abscess formation.
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