Infectious Disease Compendium

Perinephric Abscess


A late complication of urinary tract infections and pyelonephritis.

Epidemiologic Risks

Having pyelonephritis.


What ever is the cause of the pyelonephritis.

Empiric Therapy

Drain and treat for whatever is causing, can I hear you say it, the pyelonephritis.


Usually it manifests with fevers greater than 5 days on appropriate therapy for, say it again, pyelonephritis. CT or US makes the diagnosis. Then drain it.


ICD9 Codes (Soon to be supplanted by ICD10)

perinephric abscess 590.2.