Anorectal disorders that cause blood in the stool
Hematochezia refers to the removal of blood from the anus. The clinical manifestations are blood in the stool, or dark red blood in the stool, or tarry stool. According to the amount of bleeding, it is divided into obvious blood in the stool and occult blood. Many gastrointestinal diseases and systemic diseases can cause blood in the stool, but the most common anorectal diseases are as follows:
Due to trauma or dry fecal mass, foreign body in the intestinal cavity rubbing the rectal mucosa, anal mucosal skin, or due to rough inspection of the anal canal and bleeding, its color is bright red, mostly with a history of constipation or trauma, milder can heal itself.
Two internal hemorrhoids
Due to the increase in intra-abdominal pressure during defecation, the blood pressure in the venous plexus of internal hemorrhoids will also increase, coupled with the direct friction of the fecal mass, resulting in the rupture of the internal hemorrhoid mucosa and bleeding. At first, blood in the stool or blood on the toilet paper is often accompanied by constipation. There is no symptoms of blood in the stool, followed by bleeding after the stool. Later, as the hemorrhoids increase, bleeding can occur at any time when the hemorrhoids are prolapsed. The patient may have spontaneous bleeding and produce severe blood in the stool, which will cause anemia for a long time. It is more common in stage I and stage II hemorrhoids.
Three anal fissure
Due to constipation and working in the toilet, the anal mucous membrane and skin are torn by hard stools, causing bleeding. It is characterized by blood in the stool, small and irregular bleeding, sometimes not, the blood is bright red, and it is mostly in dry and hard stool Stool face or stained toilet paper, accompanied by pain during defecation, persistent severe pain after defecation, constipation and other typical symptoms, clinical diagnosis is not difficult.
Four anorectal cancer
Blood in the stool is mostly fresh blood or dark red blood, which is not mixed with stool. It is mostly oozing blood after tumor necrosis and shedding to form the ulcer surface. Massive bleeding can also occur when the tumor is infiltrated and large blood vessels, but it is rare. It may be accompanied by mucus stools, pus and blood stools, abdominal pain, tenesmus, and easy to be confused with dysentery. Or sigmoidoscopy can confirm the diagnosis.
Five rectal polyps
Polyps are damaged and bleeding due to the friction of stool during defecation, showing intermittent or continuous painless blood in the stool, bright red in color, small amount, and not mixed with stool. There may also be persistent fecal occult blood positive. The most common cause of hematochezia is the right colorectal polyp, and even anemia. If large polyps may be accompanied by abdominal discomfort, abdominal pain, diarrhea, or polyp prolapse, the diagnosis can be confirmed by sigmoidoscopy. Painless blood in the stool in children is often caused by polyps, mostly young polyps of hamartoma, which can be diagnosed by digital anal examination.
Six ulcerative colitis
The main symptom is mucus and blood in the stool. The stool contains blood, pus, and mucus, accompanied by abdominal pain, diarrhea, and systemic symptoms. Fiber colonoscopy can be diagnosed.
There are many diseases that cause blood in the stool. Don't think that bleeding in the stool is hemorrhoids, and take the medicine yourself without going to the doctor. Don't be very nervous when you see the blood in the stool and suspect that you have cancer. The correct attitude should be to seek medical attention in time, find out the cause of bleeding, and carry out targeted treatment.