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.
Definition of Minimal residual disease. Minimal residual disease: Evidence for the presence of residual malignant cells, even when so few cancer cells are present that they cannot be found by routine means. Tests for minimal residual disease (MRD) can detect some early tumors. In a patient who has been treated, the detection of MRD indicates that treatment is incomplete. MRD can thus distinguish who needs intensive and potentially more toxic therapy from those who do not.