7 year old son with persistent blood in his urine

Seven or eight months ago my 7 yr old fell on his back hitting the edge of a brick wall since then he has had spotting of blood in his urine, with no pain associated.  He has had UTI, ultrasounds, protein tests and seen a urologist, all tests coming back negitive.  However the blood persists.  We were told to increase his water consumtion, we have and still the spotting remains.  Are we missing something, I am worried we are?  
Tami, Birmingham, Al

[Dr J Singh]

Hello,
It looks like hematuria after trauma and it looks like blunt trauma after fall from a height. For this, apart from complete blood count, you need to get BUN and creatinine(Elevation of BUN without elevation in creatinine indicates urine reabsorption), CT scan without contrast, Intravenous pyelogram, renal arteriography, radionuclide scan and retrograde ureterogram.

I agree with the doctors that fluid intake should be optimum but we have to assess the degree of damage because the child is still having hematuria. Most patients heal without intervention. But sometimes radiologic selective embolization and surgical intervention are needed to control hematuria that does not subside spontaneously.

I hope it helps. Take care and regards.