chapter Three

Cancers easily confused with hemorrhoids

If you have anal bleeding or blood in your stool, you should consult a specialist to identify the site of bleeding. Nowadays, the number of colorectal cancer patients is increasing every year, so it is important not to simply assume that anal bleeding means that you have hemorrhoids.

Incidence of colorectal cancer is increasing year by year

In recent years, there has been an increase in the number of patients who mistake bleeding from colorectal cancer for hemorrhoid bleeding, thus delaying the disease. Patients who have had hemorrhoids for a long time are more experienced but tend to associate many symptoms that may not be related to hemorrhoids with hemorrhoids. This is why many patients with hemorrhoids subjectively assume that they are bleeding at the first sign of bleeding.

In addition, because the anal canal is connected to the rectum, it is difficult for the average person to accurately determine the source of blood when they see it in the stool.

The total length of the large intestine is about 1.5 meters, and the parts that are prone to cancer are the rectum and the sigmoid colon. In Japan, rectal cancer accounts for 37.9% of colorectal cancers, sigmoid colon cancer accounts for 34.3%, and about 77% of colorectal cancers occur on the left side of the colon.

In 2003, there were 38,909 deaths from colorectal cancer in Japan, including 25,850 deaths from colon cancer and 13,059 deaths from rectal cancer.

The increase in the number of colorectal cancer patients is related to the excessive intake of high-fat foods and low dietary fiber foods.

When fatty foods are consumed, bile from the liver enters the small intestine, where bile acids and other substances in bile break down fat into fatty acids and glycerol, which are then absorbed by the body.

Most of the bile in the intestine is reabsorbed by the intestinal wall and returned to the liver via the portal vein, where some of the bile acids are converted to secondary bile acids by certain bacteria in the large intestine. These secondary bile acids have the potential to cause cancer.

Therefore, if too much fatty food is consumed, the liver will produce a correspondingly large amount of

This increases the accumulation of secondary bile acids in the large intestine and increases the likelihood of developing colorectal cancer.

Dietary fiber has the function of promoting the excretion of carcinogenic substances from the body, so the intake of large amounts of dietary fiber

It helps to prevent colorectal cancer.

I thought I had hemorrhoids, but I actually had colon cancer

Dr. Burkit's research on the timing of bowel movements

Dr. Burkit, a British physician, has studied the relationship between the time it takes for food to pass through the digestive tract and colorectal cancer.

Dr. Burkit, a British physician, studied the relationship between the time it takes for food to pass through the digestive tract and colorectal cancer and concluded that dietary fiber can prevent colorectal cancer.

Dr. Burkit is the famous doctor who discovered Burkitt's lymphoma. In his work, Burkitt discovered that African farmers rarely developed colorectal cancer. So he conducted a study of the volume of bowel movements of African farmers and British students, and the time it took to defecate after a meal.

The results showed that the average daily defecation volume of African farmers was 470 grams, and the average time for food to pass through the digestive tract was 36 hours. In contrast, the average daily bowel movement of British students was 104 grams, and the average time for food to pass through the digestive tract was 73 hours.

In fact, the time it takes for food to pass through the small intestine after entering the esophagus is not much different between African farmers and British students. However, the time it takes for the digested food (chyme) to pass through the large intestine varies greatly, with the British students taking much longer than the African farmers. If the final stool stays in the intestine for too long, a large amount of harmful substances, including many carcinogens, are produced by intestinal bacteria, and secondary bile acids, which are carcinogenic, remain in the intestine for a long time.

Burkitt's survey of African farmers' food revealed that they consumed a very large proportion of dietary fiber, about 60-80 grams, in their daily diet.

From Dr. Burkitt's research, it can be concluded that the consumption of dietary fiber can help improve constipation and prevent colon cancer.

Bifidobacteria help prevent colorectal cancer

The intestine is full of bacteria, including those that break down food and bile acids, harmful bacteria that produce carcinogens, and probiotics that break down cholesterol and inhibit carcinogens.

In Kuopio, Finland, the incidence of colorectal cancer is lower than in Copenhagen, Denmark, mainly because people in Kuopio often eat a lot of dairy products and foods rich in dietary fiber, so the intestine contains a lot of probiotics, especially bifidobacteria.

In addition to the high fat content and low dietary fiber content of Western food, the high protein content is also

One of its characteristics. Animal food is rich in protein, which can be decomposed into harmful substances such as fecal odorants by the action of intestinal bacteria. If these harmful substances are excreted immediately after production, they

They have almost no adverse effects on the body. However, for people with frequent constipation, these substances

can be transformed into carcinogenic substances such as nitroso compounds, which may not only cause colorectal

It may not only cause colorectal

It may also cause breast cancer, uterine cancer, prostate cancer, liver cancer and many other diseases.

Bifidobacteria, which are beneficial to the body, can inhibit the production of these carcinogens and protect the health of the body.

In addition, foods such as wheat wort and konjac are rich in dietary fiber, which can increase the number of bifidobacteria in the intestinal tract and prevent colorectal cancer.Bifidobacterium bifidum is effective in preventing colorectal cancer.


Early diagnosis of colorectal cancer

Bifidobacteria can prevent colorectal cancer。The main factor affecting the early diagnosis of colorectal cancer is hemorrhoid, because both of them have the symptoms of anal bleeding or blood in stool. Therefore, many patients mistake the bleeding from colorectal cancer for bleeding from hemorrhoids, which delays the best Therefore, many patients mistake bleeding from colon cancer as bleeding from hemorrhoids, which may delay the best time for treatment.

An examination of 500 patients in our hospital revealed that 22 had colorectal cancer, of which 4.4% of the patients thought they were suffering from hemorrhoids.

The more serious problem is that some patients mainly talk about the symptoms of blood in stool when they come to the hospital for examination, which makes many Doctors ignore the possibility of colorectal cancer.

Some doctors also examine the patient's colon but do not do a thorough job and misdiagnose it as bleeding hemorrhoids, so that when the patient finds himself bleeding in the stool again, he also mistakes it for bleeding hemorrhoids.

Therefore, people who have hemorrhoids should be more alert to bleeding colon cancer. If you have symptoms such as bleeding from the anus or blood in the stool, it is important to go to the hospital for tests related to colorectal cancer. In addition, even if no abnormal symptoms are found, it is better to have a colon examination every one or two years to develop the habit of regular examination.

Colorectal cancer and cancer-prone anal canal diseases

The large intestine includes the cecum, ascending colon, transverse colon, descending colon, sigmoid colon, and rectum, and is about 15 meters long. The most cancer-prone areas are the rectum and sigmoid colon because they contain large amounts of secondary bile acids and other harmful substances that are carcinogenic, and they are "places where the stool stays".

In Japan, the number of cancer cases in the ascending and descending colon has also increased in recent years, so we hope you will pay attention to these two types of cancer.

There are several types of colorectal cancer, one of which is a mushroom-shaped adenoma that rises from the mucosa of the large intestine. Not all adenomas are cancerous, but there is a risk of cancer, so adenomas that are 10 mm or larger in diameter need to be removed.

There is another type of cancer that occurs in the flatter part of the mucosa. This type of colorectal cancer is more difficult to detect in the early stage, and many patients only find it after endoscopy.

Some people think that "hemorrhoids and other anal canal diseases must cause cancer", but this is wrong. However, if anal impotence is ignored, the root of anal canal cancer can be planted. If impotence is left untreated for 20 years, there is a high risk of anal cancer. This is because chronic inflammation causes pus to flow out of the affected area, and the pus irritates the anus for a long time, which can lead to cancer.

If the impotence is left untreated for a long time, the affected area may become hard and discharge a jelly-like discharge. If this symptom occurs, it is possible that you have mucus cancer, which may require removal of the anus and the use of an artificial anus if necessary.

Although not all cases of anal impotence lead to cancer, there is a risk of cancer, so it should be treated as soon as possible.

In addition, there is a type of rectal villous adenoma that is highly susceptible to cancer. Some patients report that "the nail of the internal hemorrhoid is increasing in size and prolapsing out of the anus more often" o In fact, this is sometimes not a prolapsed nail but a rectal villous adenoma. Although not all rectal villous adenomas are cancerous, the possibility of cancer is high and should be removed early.