What are symptoms of kidney cancer?

Blood in urine: Or abdominal pain.

Classic Triad: In the past the classic signs of kidney cancer were pain, blood in the urine and a mass that could be felt in the belly. That would be a late presentation of disease. Nowadays the most common sign is blood in the urine without pain or mass. A number of tumors are found on ct incidentally. Luckily when masses are found that early they are treatable with surgery or ablation with freezing.

X-ray: In the past, most kidney cancers were detected at a high stage or late stage (the cancer has grown large and invaded other structures) and therefore the signs were a large mass that can be felt, hematuria, or side/back pain. However today many kidney cancers are being detected at an early stage (small and limited to the kidney) because patients have x-rays (ct scan) for other reasons.