Surgical resection refers to the medical procedure where a surgeon removes part or all of a tissue, organ, or tumor. It is a critical intervention in the treatment of various diseases, particularly cancers. The goal is often to remove diseased tissue to prevent its spread, alleviate symptoms, or potentially cure the patient. The success and necessity of surgical resection depend on multiple factors, including the stage of the disease, the patient's overall health, and the location and size of the tissue involved.