"Haematuria occurs when blood enters the urinary collecting system and is excreted in the urine. There are many aetiologies for haematuria, and they range from benign and transient to gravely concerning. Haematuria can derive from the kidneys, ureters, bladder, prostate (in men), or urethra. Imaging can often be useful to determine the source."
"There are many causes of haematuria, some of the more common include 7,8:"
"Frank haematuria is almost always evaluated clinically, with cystoscopy, and with imaging (e.g. CT urogram)."