Rectal cancer colonoscopy can check out

Colonoscopy is an endoscopic examination, including sigmoidoscopy and colonoscopy. It can also be performed by anoscopy. Colonoscopy can take tissue from the lesion site for biopsy, which can obtain pathological diagnosis. Biopsy is the gold standard for diagnosis of rectal cancer and an important basis for formulating treatment plans. Endoscopy methods include electronic endoscopy, pigment endoscopy, ultrasound endoscopy, and can also help stage. After the diagnosis of rectal cancer, treatment can be selected in combination with stage, pathological type, patient's age, constitution, etc.