Hematuria (blood in the urine)
Blood in the urine is the most common sign of upper urinary tract cancer. As a rule it is painless. But since it can happen with a variety of urinary tract problems, your health care team should check for all likely sources of any blood found in your urine.
You may have no symptoms if the tumor is growing slowly. An X-ray or ultrasound may be the only way to see whether a slow-growing tumor is present. If the tumor is fast-growing, it could cause pain by blocking the kidney's collecting system. This could cause nausea and sharp pain in your lower back, side or stomach. Since these are also signs of kidney stones, you should see a urologist right away.
Less Common Complaints
Weight loss, anorexia, and bone pain may be signs of advanced disease. A mass in your side or abdomen can also be signs of advanced disease.