A blockage in the urinary tract can cause leukocytes to appear in the urine. This is often accompanied by blood in the urine. Trauma to the pelvis, a pelvis tumor, bladder or kidney stones, unwanted objects in the urinary tract or prostate hypertrophy can cause a blockage that damages the urinary system.ladder infections or inflammation of the urinary tract and ureters can also cause leukocytes to appear in the urine. Sexual intercourse can cause the transfer of bacteria that can cause an infection to form in the urinary tract.
The definition of a residual is something left over after other things have been used, subtracted or removed. An example of residual is the paint which left over after all the rooms in a house have been painted.
of, or having the nature of, a residue or residuum; left over after part or most is taken away; remaining. see residue and amp; -al. Origin of residual. 1  what is left at the end of a process; something remaining. â 2  the fee paid to a performer for each rerun of filmed or taped material, as on television: often used in pl. 3  Geol. 4  monadnock. 5  Math. the difference between an actual value of some variable and a mean or other estimated value.