bloodstream that appears in the urine. Also called hematuria. Gross hematuria means blood which therefore abundant inside urine your blood is visible in just the naked eye. Microhematuria means bloodstream in urine that's noticeable only under a microscope; there was therefore small blood that it is not seen without magnification. Hematuria, whether gross or microscopic, is unusual and should be additional examined. It could or may possibly not be combined with discomfort. Painful hematuria could be brought on by several conditions, including infections and stones into the endocrine system. Painless hematuria can be because most factors, including cancer.