With the accelerated pace of modern life and changes in diet, work and rest habits, many office workers will encounter a frequent symptom that causes great trouble, that is, blood in the stool. When encountering blood in the stool, people often have two possible reactions. Either they think it is a small problem and ignore the symptoms, or they suspect that it is rectal cancer and worry about it all day long. Does the presence of blood in the stool mean that they have rectal cancer? How should we treat and respond? Today, our micro-science popularization will discuss this issue worthy of attention.
Identify the cause and location of bleeding from color
From the color point of view, blood in the stool is mainly bright red, dark red, or tar-like, ie black stool, which can be called blood in the stool. Its color mainly depends on whether the location of the bleeding is in the upper gastrointestinal tract or the lower gastrointestinal tract, the amount of bleeding and the time the blood stays in the gastrointestinal tract. Black stool, or tarry, is the most important manifestation of upper gastrointestinal bleeding. Upper gastrointestinal bleeding blood stays in the digestive tract for a long time. The iron in hemoglobin combines with sulfide to form iron sulfide under the action of intestinal bacteria. So that the stool appears black. The main causes of upper gastrointestinal bleeding are peptic ulcer and erosive gastritis.
When the amount of bleeding is large and fast, the black stool may also turn into red bloody stool, and it may be accompanied by hematemesis, which requires vigilance. Bloody stools are mainly blood quickly discharged through the anus in a short period of time. Most of the lesions are located at the end of the rectum or anal opening, including hemorrhoids, anal fissures, rectal prolapse, etc., which can often be touched or accompanied by obvious pain. It is easier to identify.
Dark red bloody stools or mucous pus and bloody stools refer to the mixed discharge of blood or mucus with feces. It is common in colorectal tumors and ulcerative colitis. Jam-like stools can also occur when intussusception occurs in infants, and dysentery, amoebic infection, etc. The disease is often accompanied by pus and blood in the stool.
List of symptoms of blood in the stool of common diseases
Stomach ulcer, erosive gastritis: tarry black stool, rhythmic pain in the upper abdomen, which has a clear relationship with eating, heavy drinking, and mental stress.
Hemorrhoids: Mainly bright red bloody stools, accompanied by infections, pus is attached to the surface of the stool, and does not mix with it. Internal hemorrhoids have no obvious pain, and external hemorrhoids may be accompanied by obvious pain. Mainly bleeding after stool.
Anal fissure: Bleeding attached to the surface of the stool or stained with blood on toilet paper is bright red, accompanied by severe pain during defecation. Mainly bleeding during defecation.
Inflammatory bowel disease: mucus and blood in the stool, which are relatively turbid, mixed in the stool, and may be accompanied by symptoms such as abdominal pain and fever.
Intestinal polyps: Painless bloody stools, which can be bright red or dark red, and may be accompanied by changes in bowel habits.
Colorectal cancer: mucus pus and blood in the stool, bleeding mixed in the stool, accompanied by weight loss, abdominal pain, etc. The stool occult blood test was positive.
Will blood in the stool be colorectal cancer? How to check to confirm the diagnosis?
Not all blood in the stool means intestinal tumors, and not all intestinal tumors have blood in the stool. Especially early colorectal cancer or right colon cancer is often not the main manifestation of blood. Early rectal cancer may only consist of changes in bowel habits, or a small amount of painless bright red blood in the stool, and patients often think it is hemorrhoids and neglect to go to the doctor. When the tumor continues to progress and develops into middle and advanced rectal cancer, typical mucus, pus, blood, stool, abdominal pain, weight loss, fever, and thinning of the stool shape will appear. If the tumor blocks the intestine and forms an obstruction, it will be more severe Abdominal pain, bloating, and stop defecation.
When a tumor is suspected, you should go to the hospital in time. The easiest way to check is digital rectal examination, which is the simplest screening method and can find more than 70% of rectal tumors. In addition, blood can be drawn for tumor markers, including CEA, CA199, etc. When the increase is 2-3 times the normal value, it is highly suspected of colorectal cancer. The best way to confirm the diagnosis is colonoscopy. Although it is painful, you can observe all the conditions in the colon and rectum under the naked eye. If abnormalities are found, pathological diagnosis can be performed. This is the "gold standard" for tumor diagnosis. .
What kind of people need to be alert to the risk of colorectal cancer?
Friends with a clear family history of colorectal cancer, especially those whose immediate family members suffer from colorectal cancer, will have a greatly increased risk of cancer and must be highly vigilant. The general population can start to consider routine colonoscopy when they are over 40 years old. For those who have a clear family history and have colon cancer patients in their first-degree relatives, it is recommended to advance the examination time and start receiving colonoscopy after the age of 30. an examination. It is worth noting that long-term high-fat, low-fiber diets, red meat intake, alcoholism and smoking are also the main pathogenic factors of colorectal cancer, while high-fiber and low-fat diets can significantly reduce the risk of colon cancer. In addition, some diseases such as intestinal polyps, ulcerative colitis, Crohn's disease, etc. will also increase the risk of cancer, especially adenomatous polyps with a diameter greater than 2cm, which should be removed in time.
In short, blood in the stool is a very common symptom and does not require excessive stress. Of course, if there is long-term blood in the stool, you should seek medical treatment in time even if it is not a tumor. People with a family history of tumors should be highly alert to the risk of colorectal cancer and require regular inspections and timely treatment.