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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Is Causing My Severe Left Flank Pain?

I am currently being treated for pyleonephritis in the left kidney. I am receiving outpatient Invanz infusions as the bacteria was previously noted to be a rare E-coli strain. However, before I began the infusion therapy, my urine was sent for a culture from the urologist's office. I received a call telling me that the culture was negative. I am still suffering from moderate to severe left flank pain and occasional night sweats. I am 55 yrs old, female, diabetic. I am 5'3" and weigh 240. Thank you
posted on Fri, 14 Mar 2014
Twitter Wed, 3 Aug 2016 Answered on
Twitter Wed, 3 Aug 2016 Last reviewed on
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Urologist,  's  Response
Hi
Infection in kidney can exist even if urine culture is negative and it might take at least few days and sometimes 2-3 weeks for pain to settle down. Very rarely pain can persist in mild form for even 3 months.

However if you continue to have sever pain or if fever happens again then a repeat ultrasound or CT scan of kidneys is indicated to see whether you have developed pus around or in the kidney.
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What Is Causing My Severe Left Flank Pain?

Hi Infection in kidney can exist even if urine culture is negative and it might take at least few days and sometimes 2-3 weeks for pain to settle down. Very rarely pain can persist in mild form for even 3 months. However if you continue to have sever pain or if fever happens again then a repeat ultrasound or CT scan of kidneys is indicated to see whether you have developed pus around or in the kidney.