Blood in the urine:血液,尿液中出现。也被称为hematuria.Gross hematuriarefers to blood that is so plentiful in the urine that the blood is visible with just the naked eye. Microhematuria refers to blood in urine that is visible only under amicroscope; there is so little blood that it cannot be seen without magnification. Hematuria, whether gross or microscopic, is abnormal and should be further investigated. It may or may not be accompanied by pain. Painful hematuria can be caused by a number of disorders, including infections and stones in theurinary tract. Painless hematuria can also be due to a large number of causes, including cancer.
