Rectal cancer mainly refers to the malignant tumor at the junction of dentate line above anal canal and rectum sigmoid colon. The length of rectum is about 12- 15cm. The early symptoms of rectal cancer can be manifested as bloody stool, accounting for 80% of all symptoms. The blood of rectal cancer has its own characteristics, mainly reflected in the dark red bloody stool of mucus, which is called bloody stool mixed with blood. The difference between bloody stool in rectal cancer and hemorrhoids. Hemorrhoid hematochezia is often a drop of blood, which is separated from blood, called hematochezia separation.
In addition, rectal cancer is characterized by urgent and heavy defecation, which mainly means that we have to go to the toilet very urgently after going to the toilet. The main manifestations are rectal irritation, frequent defecation, frequent defecation, changes in defecation habits, anemia and other symptoms. These are all related manifestations of rectal cancer. If patients have these clinical manifestations, especially those with some family history of tumors, they should go to the hospital in time.