Chronic pain in cancer patients can be caused by a variety of factors:
1. Tumor Growth: As tumors grow, they can compress or invade surrounding tissues, nerves, and bones, causing significant pain. 2. Treatment Side Effects: Chemotherapy, radiation, and surgery can lead to lasting pain. For example, chemotherapy-induced peripheral neuropathy can cause chronic pain due to nerve damage. 3. Post-Surgical Pain: Surgical procedures to remove tumors or affected organs can leave lingering pain, especially if nerves are damaged during the operation.
