There is occult blood in the stool

Occult blood in the stool usually means that the blood cannot be seen in the stool by the naked eye, but the relevant red blood cells can be detected through examination with relevant instruments. There are many reasons for this situation, it may be a problem with the digestive tract, it may be caused by food and diet, or it may be a problem with internal organ damage. The specific cause must be combined with the hospital examination and doctor's diagnosis. This article only provides relevant analysis suggestions.

Generally speaking, fecal occult blood refers to what is commonly referred to as fecal occult blood in medicine. Clinically, it is often manifested as the absence of blood in the excrement, but when the stool is tested, red blood cells are found in it. The occurrence of this condition is related to diseases such as gastrointestinal bleeding, tumors, ulcers, gastric cancer, and inflammatory bowel inflammation.

Causes of occult blood in stool

According to the statistical data analysis of fecal occult blood in clinical practice, in the early stages of gastrointestinal cancer, some patients will be found to be positive when undergoing occult blood tests. Patients with diseases such as rectal polyps, colon polyps, gastric cancer and hemorrhoidal bleeding may also be found to have occult blood in their stool when their stool is tested for occult blood. Therefore, when looking for the cause of occult blood in stool, we need to start with these common symptoms.

Stool occult blood is mainly seen in gastrointestinal bleeding: 1. In the early stage of gastrointestinal cancer, 20% of patients may have a positive occult blood test. The positive rate of occult blood in late-stage patients can reach more than 90%, and it can be persistently positive. Therefore, fecal occult blood test can be used as the preferred indicator for screening gastrointestinal tumors. 2. The fecal occult blood test of patients with gastrointestinal bleeding and gastrointestinal ulcers is mostly positive, or intermittently positive. 3. Diseases that can cause more red blood cells to appear in the stool, such as dysentery, rectal polyps, hemorrhoidal bleeding, etc., can also cause a positive reaction in the occult blood test.

Possible reasons include

1: Dietary influence: eating animal blood, food with high iron content or certain drugs may cause false positives;

2: Gastrointestinal ulcer, gastrointestinal tumor, gastrointestinal polyp, gastrointestinal inflammation, gastrointestinal vascular malformation, etc.;

3: Gastrointestinal bleeding caused by systemic diseases, such as lupus erythematosus, polyarteritis, etc.;

4: The surrounding organ diseases rupture or invade the digestive tract, etc.;

5: Hemorrhoids, anal fistula, etc.