7 doctors weighed in:
What could cause recurrent flank pain if CT scan is negative for stones and urine test is negative for infection. Dip was positive for blood?
7 doctors weighed in

Dr. George Klauber
Pediatrics - Urology
4 doctors agree
In brief: ?Hypercalcuria
Negative ct scan has almost definitely ruled kidney tumor, stones or obstruction.
Combination of flank pain and blood in the urine could be indicative of hypercalcuria. Xs calcium is present in the urine and calcium crystals can obstruct the kiney nephrons (tiny kidney tubules) and cause pain. 24 hour calcium excretion should be < 300 mg or < 4mg/kg/24 hours.

In brief: ?Hypercalcuria
Negative ct scan has almost definitely ruled kidney tumor, stones or obstruction.
Combination of flank pain and blood in the urine could be indicative of hypercalcuria. Xs calcium is present in the urine and calcium crystals can obstruct the kiney nephrons (tiny kidney tubules) and cause pain. 24 hour calcium excretion should be < 300 mg or < 4mg/kg/24 hours.
Dr. George Klauber
Dr. George Klauber
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Dr. Karen Sibert
Anesthesiology
1 doctor agrees
In brief: See your doctor
Recurrent flank pain especially with blood in the urine is definitely cause for concern.
You should see your doctor, and perhaps ask for referral to a urologist. It is reasonable to seek further testing to rule out unusual but potentially serious causes such as kidney cancer. If the flow of urine is obstructed for any reason, it can cause urine to back up into the kidney and produce flank pain.

In brief: See your doctor
Recurrent flank pain especially with blood in the urine is definitely cause for concern.
You should see your doctor, and perhaps ask for referral to a urologist. It is reasonable to seek further testing to rule out unusual but potentially serious causes such as kidney cancer. If the flow of urine is obstructed for any reason, it can cause urine to back up into the kidney and produce flank pain.
Dr. Karen Sibert
Dr. Karen Sibert
Thank
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