What is the presentation of corticomedullary abscess in acute pyelonephritis (kidney infection)?

Updated: Jul 01, 2021
  • Author: Tibor Fulop, MD, PhD, FACP, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Patients with renal corticomedullary abscesses often present with chills, fever, and flank or abdominal pain, and patients may have dysuria and/or nausea and vomiting. Leukocytosis may be present. Bacteriuria, pyuria, hematuria, or proteinuria may be present, as the intrarenal abscesses drain in the collecting system, but the urinalysis results may be normal in as many as 30% of patients. Bacteremia may be observed in acute focal or multifocal bacterial nephritis.

Corticomedullary abscess is usually associated with a urinary tract abnormality, such as vesicoureteral reflux or obstruction. It is commonly caused by Enterobacteriaceae.

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