Im 18 years old and I think I may have it. though I have had a blood test 3 years ago and everything is normal.

pain in the back and side that does not go away
a lump in the side or the abdomen
unexplained weight loss
fever
feeling very tired or having a general feeling of illness

I am only 13 so i really dont know… if you seriously think its a possibilty that you have it go to the doctor asap. if its just an assumption go to webmd.com and type in your symptoms…. its a really helpful website

I hope you dont have it and i wish you the best of luck!

kidney cancer can sometimes have no obvious symptoms
When kidney cancer first starts to develop, there are often no obvious symptoms. Increasingly, kidney cancers are being picked up on ultrasound scans that are done for other reasons. so they are being found at an earlier stage, and so are less likely to have symptoms. Once the cancer begins to grow, the symptoms can become more obvious.
Blood in the urine
This is the most common symptom of kidney cancer. Your doctor may call this haematuria. about half of those diagnosed with kidney cancer will have this symptom when they first go to the doctor.

The blood does not have to be there all the time. It can come and go. sometimes, the blood cannot be seen by the naked eye but can be picked up by a simple urine test. if you ever see blood in your urine, you should go to the doctor.
A lump or mass in the area of the kidney
Tiredness
Loss of appetite
Weight loss
A high temperature and very heavy sweating
A pain in the side that won’t go away
A general feeling of poor health
High blood pressure and having fewer red blood cells than normal (anaemia) can also be symptoms of kidney cancer. These symptoms are related to the hormones that the kidneys produce.

If you have any of the symptoms discussed in this section, go to your doctor for a check-up. Remember that these symptoms can be caused by many other conditions that are not cancer. most people with these symptoms will not have cancer. But if it is cancer, then the sooner it is diagnosed the easier it will be to treat.

Kidney Cancer: blood in urine; dull ache or pain in the back or side; lump in kidney area, sometimes accompanied by high blood pressure or abnormality in red blood cell count.

Glad you ask this question I was wondering myself about that. I hope you don't but I would say its best to let the urogist be the one to do the test .