Some types of cancer cause tumors to grow, which can cause loss of function, pain or other sensations in the body based on its location. Tumors in children are often found in the brain, kidneys, muscles, bones and bladder. A Wilms’ tumor in the kidneys often results in swelling or pain in the abdomen, and a loss of appetite. If your child has bone pain, they may have osteosarcoma (a bone tumor). Ewing sarcoma is a rare type of bone tumor that is often accompanied by pain in the pelvis, shoulder blades and ribs. Blood in the urine can signal a bladder tumor.
