Lower back pain
Patients with bladder problems may also report lower back pain. When we look at the anatomical position of the bladder, it is anterior to the sacral spine. Thus, in bladder cancer, the expanding bladder compresses the nerves coming from the lower vertebrae, which may result in pain located in the lower back. Additionally, bladder cancer may sometimes cause obstruction of the urinary tract. When the obstruction becomes chronic, the urine starts flowing backward and accumulates in the kidneys, causing swelling and pain in this area of the back.