2. Lower Back Pain
There are many reasons a person might begin to feel pain in their lower back, particularly those over the age of 40. It’s most commonly associated with musculoskeletal injury or disk degeneration, says Healthline, but can also be a symptom of kidney cancer. “About 41-percent of people with RCC report back pain. But most people don’t experience back pain until the cancer is in the later stages,” writes the source.
The pain associated with kidney cancer can either be a dull ache or a sharp stabbing pain. It varies between patients. “Some people report pressure instead of an ache or sharp pain.” Either way, if you’re experiencing sudden pain that lasts longer than a few days, you should check in with a doctor to determine the cause.
It is localized either on one side of the flank or just below the ribs. Healthline explains that a “flank” is the area between the lower back and bottom backside of the ribs. Some people describe it as side pain, as well.