A Surgical Case with Collision Cancer of the Rectum and Anal Canal

Abstract

Un d i f f . ：Un d i f f e r e n t i a t e d a d e n o c a r c i n o ma s , P o o r l y ：P o o r l y d i f f e r e n t i a t e d a d e n o c a r c i n o ma s , Mo d e r a t e l y ：Mo d e r a t e l y d i f f e r e n t ia t e d a d e n o c a r c i n o ma s , G I S T：Ga s t r o i n t e s t i n a l s t r o ma l t u mo