explain how urinary tract infections cause both hematuria and pyuria
Hematuria Blood in the urine can originate at any point along the urinary tract and both gross and microscopic hematuria may represent serious underlying disease. Gross hematuria is often alarming and will prompt the patient to seek medical attention. - Pyuria is the presence of white blood cells (leukocytes) in the urine (6 to 10 or more neutrophils per high power field of unspun, voided mid-stream urine). Pyuria is not a diagnosis; it is a laboratory finding in many diseases, most commonly urinary tract infections (UTI). Pyuria usually indicates that bacteria have invaded the upper or lower urinary tract, invoking an inflammatory response of the lining of the urinary tract (urothelium) in that location.