There are five types of blood in the stool:
1. False blood in the stool, don't worry.
Due to the discoloration of stool (dark brown, black or red) after taking certain foods and drugs, the "blood stool" will disappear after stopping the drugs and food. Such as iron, carbon powder, bismuth, Chinese herbal medicine, or food such as pig liver, animal blood, tomatoes, and beets.
2. Bloody stools, benign diseases are common.
Most of them are acute bleeding, which flows out from the anus within a short time after bleeding. The appearance is similar to traumatic bleeding, bright red or purple-red, dark red, it will clot into blood clots after a long time. Common (1) Hemorrhoids: internal hemorrhoids, bright red, not mixed with stool, mainly dripping or spurting blood during defecation, if there is no obvious prolapse and inflammatory edema of internal hemorrhoids, it is often not accompanied by anal pain. External hemorrhoids generally have no stool bleeding.
(2) Intestinal polyps: painless bleeding from stool. Bleeding in defecation, defecation stops after defecation, and the amount varies. Generally, blood does not mix with feces. If the polyp is located in a high position and the amount is large, it can also mix with feces.
(3) Rectal prolapse: Anal lumps are repeatedly prominent, and long-term failure to heal can cause bleeding after the stool.
(4) Anal fissure: There is blood on one side of the stool surface, which does not mix with the stool. Some patients have blood dripping.
3. Mucous pus and blood in the stool, beware of bowel cancer! !
There is both mucus and blood in the stool. Commonly seen in intestinal tumors or inflammation. Common in
(1) Rectal cancer: changes in bowel habits. Recently, I often feel constipation, unclean defecation, or the number of bowel movements increases, the note becomes thinner, bright red or dark red, and there may be mucus in the feces, often blood, mucus, and feces The three are mixed.
(2) Colon cancer: mostly purulent or mucous bloody stools with darker blood, possibly accompanied by abdominal masses, abdominal pain, chronic progressive weight loss and other symptoms.
(3) Ulcerative colitis: repeated mucus or purulent stools, accompanied by left lower abdominal pain or lower abdominal pain, and a long medical history.
(4) Intestinal infectious diseases, such as bacillary dysentery, amoebic enteropathy, etc.
4. Black stool, how is your stomach?
Also known as tarry stool, stool is black or brownish-black. It is one of the most common symptoms of upper gastrointestinal bleeding: such as gastric ulcer, duodenal ulcer and so on. If the amount of bleeding is small and the bleeding rate is slow, the blood stays in the intestine for a long time, and the excreted stool is black; if the amount of bleeding is large and the residence time in the intestine is short, the discharged blood is dark red; The amount of bleeding is particularly large, and it can be bright red when it is discharged quickly.
5. Occult blood is more terrible!
A small amount (minor amount) of gastrointestinal bleeding that is invisible to the naked eye is only positive in the stool occult blood test, which is called occult blood in the stool. Occult bloody stools, common ulcers, inflammations and tumors may occur in all diseases that cause gastrointestinal bleeding. Early fecal occult blood of intestinal polyps (cancer) can be positive. Regular fecal occult blood testing is an important method to screen for intestinal tumors.
What should we do if we have blood in the stool?
In addition to asking the patient's medical history and physical examination, a specialist physical examination is also necessary. For example: digital rectal examination, one-time anoscopy, etc. Digital rectal examination is a necessary examination step for the diagnosis of rectal cancer. About 80% of patients with rectal cancer can be found by natural rectal examination at the time of treatment. Hard and uneven masses can be palpable, and intestinal stenosis and fixed masses can be palpable in advanced stages. , See the dirty pus and blood with feces on the finger cot In addition, for patients with older age, longer medical history, family history of inflammatory bowel disease and bowel tumors, and other risk factors, electronic colonoscopy or abdominal CT examination is necessary.