During the past decane, advances have been made in the adjuvant treatm
ent of resectable rectal cancer. Postoperative combined-modality thera
py significantly improves local control and survival. Recent Intergrou
p postoperative trials have focused on the identification of optimal c
hemotherapeutic agents and their method of administration. Preoperativ
e therapy has the potential advantages of producing less acute toxicit
y and increasing the likelihood of sphincter preservation. New chemoth
erapeutic agents and radiation techniques are active areas of investig
ation.