Definition

In stage 3 neuroblastoma, one of the following is true: the cancer (1) cannot be completely removed during surgery and has spread from one side of the body to the other side and may also have spread to nearby lymph nodes; or (2) is on one side of the body and has spread to lymph nodes on the other side of the body; or (3) is in the middle of the body and has spread to tissues or lymph nodes on both sides of the body, and the cancer cannot be removed by surgery.