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Renal papillary necrosis

  • Alternative Names

    Necrosis - renal papillae; Renal medullary necrosis


    Necrosis (tissue death) of the renal papillae may make the kidney unable to concentrate the urine. Symptoms may include:

    • Back pain or flank pain
    • Bloody urine
    • Cloudy urine
    • Dark, rust-colored, or brown urine
    • Tissue in the urine

    Additional symptoms that may be associated with this disease:

    • Chills
    • Incontinence
    • Increased urinary frequency or urgency
    • Painful urination
    • Passing large amounts of urine
    • Urinating frequently at night
    • Urinary hesitancy

    Signs and tests

    An examination may reveal tenderness when touching the body over the affected kidney. There may be a history of chronic or recurrent urinary tract infections. There may be signs of obstructive uropathy or renal failure.

    A urinalysis may show dead tissue in the urine.

    An IVP may show obstruction or tissue in the renal pelvis or ureter.