Hi doctor. I have a question, why is it recommended that a client undergo a gastrointestinal endoscopy to screen for stomach and colorectal cancer? I hope the doctor can help me.

Due to many different reasons, esophageal cancer is increasing, diverse and dangerous. Smoking is one of the main causes of this condition.

Fecal occult blood test is indicated when the patient has gastrointestinal abnormalities leading to blood in the stool. Fecal occult blood test is indicated to screen for colorectal cancer in at-risk subjects.