Health Bud

Staging is used by the doctors to evaluate how much the cancer has invaded the organism and to decide further what methods of therapy to apply. The colon cancer staging began with the Duke’s classification system which contained three stages: A, B, and C. After a while Astler-Coller brought modifications to this classification, adding one more stage: the D stage. In 1978 Gunderson & Sosin brought other modifications to the classification and a few years ago, the American Joint Committee on Cancer has come with a new classification called TNM containing four stages.