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2. Persistent Lower Back Pain
The kidneys sit right below your back ribs, so when they become inflamed or infected, this is where you may feel the most pain. Any discomfort or changes in this area should raise suspicions, especially when felt on one side of the body: as the cancer progresses and the tumor grows, it can put pressure on the surrounding nerves.
But pain doesn’t necessarily mean cancer. Low back issues or weak abdominal muscles can lead to strains in this area, which you may confuse with something more serious. The most significant aspect is how long the stabbing pain or nagging ache sticks around – pain that doesn’t go away for two weeks calls for further investigation.