What does 　　 rectal adenocarcinoma mean? Rectal adenocarcinoma, adenocarcinoma, accounts for the majority, and the cancer body has an arrangement of glandular ducts, which can be divided into grades Ⅰ, Ⅱ, and Ⅲ according to the degree of differentiation. The degree of malignancy is quite different. The exact cause is currently unknown. It is generally believed that rectal adenocarcinoma is related to the following factors:

　　1. Dietary factors
　　 Such as long-term high fat, high protein and low cellulose diet, the incidence of rectal adenocarcinoma is increased.
　　2. Rectal adenoma
　　Rectal adenocarcinoma is mostly derived from rectal adenoma, of which villous adenoma has the highest cancer rate, and the larger the adenoma, the more cancerous rate Tall, larger pedicleless broad-base adenomatous polyps are more likely to become cancerous than pedicles. Adenomatous polyps are generally considered to be precancerous.
　　3. Hereditary precancerous lesions
　　 Hereditary nonpolyposis colorectal cancer, familial colorectal polyposis, etc.
　　4. Inflammatory disease of the large intestine
　　Adenocarcinoma of the rectum has the following symptoms:
　　Symptom 1: Chronic intestinal obstruction, abdominal contraction, intestinal hypertonia and paroxysmal Colic.
　　 Symptom 2: Blood in the stool is one of the common symptoms of rectal cancer. In the early stage of the disease, 50％ cases had blood in the stool, with a small amount of bleeding at the beginning, which was seen in the fecal profile.
　　 Symptom 3: Covered with cachexia and early cancer, the patient presents with loss of appetite, thinness, weakness, blood deficiency, jaundice, ascites, etc.
　　Precautions: Patients with rectal cancer should timely understand the care of artificial anus, and the use of artificial anal bags should also be mastered. Before using the artificial anal bag, the surrounding skin should be cleaned and treated. After use, the hygiene of the anal bag should be paid attention to to avoid cross infection.