False.
Early stage of rectal cancer usually has no obvious symptoms, when the lesion progresses to the point of affecting defecation or when the cancer breaks down and bleeds, obvious clinical symptoms appear, such as frequent bowel movement, change of bowel habit, change of stool character, anal dropping sensation before defecation as well as symptoms of urgency and heaviness, and so on.
Rectal cancer refers to the cancer from the rectosigmoid junction to the dentate line, which is one of the most common malignant tumors in digestive tract. The cause of rectal cancer is still unclear and may be caused by factors such as environment, diet, lifestyle habits and heredity.
Doctors can identify the presence of rectal cancer through the patient’s medical history, symptoms, and the results of physical examination, endoscopy, laboratory tests, and imaging tests.
It is suggested that when patients have symptoms such as change of defecation habit, change of stool trait, blood in stool, abdominal distension, abdominal pain, obvious weight loss, etc., they should consult doctor in time, improve the examination to make a clear diagnosis, actively cooperate with the treatment under doctor’s guidance, pay attention to the care of daily life, regular follow-up, pay attention to the diet, and pay attention to the rest.