Although kidney cancer invasion does not cause pain, people might feel some pressure or pain in their back if there’s a blood clot blocking the urine from draining well from the kidney, said Roswell Park Complimentary Cancer Center.
The health site added: “This pain can be similar to when kidney stones block urine drainage from the kidney.
“Blood clots in the urine can form when the urine is bloody and are different from blood clots that form in veins.”
“Historically, some information on kidney cancer might have suggested back pain as a symptom because a large tumour itself could cause urine drainage to be blocked, causing discomfort and pressure on the person’s back,” said urologist Dr Eric Kauffman.
That’s a rare presentation though, he added.