A patient is often constipated, for more than a year, she took detoxification supplements every day, the last few days the effect is not good to increase the amount, resulting in rectal perforation, sent to the hospital in critical condition. The doctor said that she was actually suffering from intestinal tumor, blindly eating health supplements aggravated the disease, delayed for a long time, the future waist hanging stoma bag (storage of excrement) life. It turns out that her long-term constipation is caused by intestinal tumor, so how to detect it early? Is constipation and abnormal bowel movement an early symptom of rectal tumor? In medical science, it is generally believed that the early symptoms of rectal tumor are as follows: 1. abdominal discomfort: in the early stage of rectal tumor, patients will start to have symptoms of abdominal distension and indigestion, and then there will be changes in defecation habits, such as increased number of stools, diarrhea or constipation, and abdominal pain before stool. Later on, mucus stool or mucopurulent blood stool can be found; 2, intestinal obstruction manifestations: intestinal obstruction is incomplete or complete low intestinal obstruction symptoms, such as abdominal distension, abdominal pain (distension or colic), constipation or stool closure. Physical examination shows abdominal bulge, intestinal type, localized pressure pain, and can hear hyperactive bowel sounds; 3, rectal lesions: rectal palpation can be found in the intestinal cavity cauliflower-shaped hard mass, or edge elevation, central depression of the ulcer, or intestinal cavity ring narrowing, finger sleeve often stained with pus and blood. About half of the colorectal tumors are located in the rectum, and most of the rectal tumors can be palpated during rectal palpation; 4.Toxic symptoms: due to blood loss and toxin absorption of tumor ulceration, patients with rectal tumors often show anemia, low fever, weakness, wasting and swelling, especially anemia and wasting are the main features; 5.Abdominal mass: patients with rectal tumors also show change in bowel habit, continuous abdominal discomfort, vague pain or abdominal distension, and fecal mass. Patients with rectal tumor may also have change in bowel habit, persistent abdominal discomfort, vague pain or abdominal distension, thin stool or with blood and mucus, persistent positive fecal occult blood test, unexplained anemia, weakness or weight loss, etc. A mass may be found in the abdomen. The change of stool habit of rectal tumor patients includes constipation, diarrhea or alternating with constipation, incomplete defecation and difficult defecation. Constipation is mainly caused by acute and chronic bowel obstruction caused by tumor. Constipation like this patient is relatively less common than loose stool, because only when the tumor grows to a certain size, it can partially or completely block the intestinal lumen, causing complete or incomplete intestinal obstruction, and is progressively aggravated. Constipation is usually later than loose stool and has less chance to appear than loose stool in terms of the time of appearance of symptoms. If the patient has loose stool first and then constipation, it may indicate that the tumor lesion is increasing and the lesion is getting worse. In addition, constipation is a risk factor for colorectal cancer. A large number of clinical evidence shows that the reasons for the significantly higher incidence of colon and rectal cancer in constipated patients are as follows: long-term chronic constipation, dry stool often stays in the large intestine and cannot be discharged in time, which can produce adverse mechanical and physical stimulation to the intestinal mucosa. There are some undigested fats, proteins, etc. in the intestinal tract. Chemical carcinogens such as amines such as nitrosamines, phenols, amines, azo benzene, etc. are produced under the action of intestinal anaerobic bacteria, and toxic substances such as indole, methylindole, hydrogen sulfide are also produced. Therefore, when repeatedly appearing thin stools or constipation, you need to go to the hospital promptly and ask for medical attention.