How many causes of colon cancer are there? What causes colon cancer?

There are three causes of colon cancer: (1) Dietary factors Excessive intake of fatty foods.

Colon cancer is mostly manifested by wasting, such as anemia, emaciation, fatigue, low-grade fever, etc., and a palpable mass in the abdomen, which is a fecal mass or cancer. In the early stage of colon cancer, it is mostly manifested as a change in stool habits, alternating dryness and diarrhea, and dark red blood in the stool, mixed with the stool, and intestinal obstruction symptoms in the late stage. Hemorrhoidal bleeding is usually fresh blood and appears before defecation.

Colon cancer: There are 4 aspects of colon cancer: chronic inflammation of the colon caused by ulcerative colitis, Japanese schistosomiasis, etc.; The carcinogenesis rate of patients with familial adenomas is as high as 67% of colon adenomas; dietary and carcinogens such as increased bile acids and bile salts; Genetic factors may be a predisposition to cancer, and in addition to genetic predisposition, there are also several acquired triggers that can cause cancer.

Diet, irregular work and rest, and uncomfortable mood will lead to indigestion and meridian stasis, and the mentality is the most important.

What are the main causes of colon cancer? We must understand in our lives in order to do a good job of prevention.

So, what are the causes of colon cancer, and the following is a detailed introduction to the causes of colon cancer.

Causes of colon cancer:

1) Environmental factors.

The incidence of colon cancer is related to lifestyle habits, especially diet. A high-fat diet and insufficient dietary fiber are the main causes of the disease. High-fat diet, especially foods containing saturated fatty acids, can promote the synthesis of cholesterol and bile acid in the liver, which increases into the intestinal lumen and is converted into cholesterol metabolites and hypocholic acid by the action of colon bacteria, which has carcinogenic effects.

2) Dietary factors.

The lack of unabsorbed cellulose in food and food causes feces to stay in the intestine for a longer time, prolonging the action of carcinogens in feces on the intestinal wall, and promoting the absorption of carcinogens in the intestines. High fiber in food has the ability to absorb water, increase stool volume, reduce the concentration of carcinogens, shorten the residence time in the intestine, reduce the action time of intestinal carcinogens, and can absorb harmful substances and promote excretion, thereby reducing the risk of colon cancer. Insufficient dietary fiber is one of the most common causes of colon cancer.

3) Genetic factors.

Genetic factors are one of the causes of colon cancer. Family history: First-degree relatives who have had colorectal cancer have more children than the general population in their lifetime. About 1|Four new patients had a family history of colorectal cancer.

The above we have introduced the causes of colon cancer, and in addition to understanding the causes of colon cancer, we must do a good job of prevention to prevent colon cancer. I hope you all are in good health.

The most common cause of colon cancer is poor eating habits, followed by environmental factors, family genetic factors, etc. are also one of the reasons.

Hello, this friend. There are many causes of colon cancer, which can be summarized as follows: 1 dietary reasons, 2 occupational reasons and physical activity, 3 genetic factors, and 4 disease factors. Pay attention to your usual diet, eat more vitamin-rich foods, and eat more vegetables.

Hello! Causes of colon cancer: (1) Environmental factorsThe incidence of colon cancer is related to lifestyle and diet.

2) Dietary factors: The lack of unabsorbed fiber in food and food causes feces to stay in the intestines for a longer time. (3) Genetic factors: Genetic factors are one of the causes of colon cancer.

Hello, the main causes of colon cancer are high-fat diets and insufficient fiber intake. Chronic inflammation of the colon makes the incidence of bowel cancer higher than in the general population. People with colon polyps are five times more likely to have colon cancer than those without colon polyps.

Familial multiple intestinal polyps and ploids have a higher incidence of cancer. Genetic factors may also be involved in the pathogenesis of colon cancer.

Hello! The causes of colon cancer are as follows:1

Epidemiological studies of dietary factors have shown that 70% and 90% of cancer onset is related to environmental factors and lifestyle. 2.Occupational factors and physical activity are more common in colon cancer patients, and insulating asbestos production workers are common, and animal experiments have shown that ingestion of asbestos fibers can penetrate the intestinal mucosa.

3.Genetic factors are estimated to play an important role in at least 20% to 30% of colon cancer patients.

Typical symptoms.

Weight loss and wasting.

The common symptom of colon cancer patients is due to long-term abdominal distension and abdominal pain in colon cancer patients, which leads to weakened digestion and absorption function, which in turn causes malnutrition, significant weight loss, and severe weight loss.

The main manifestation of left colon cancer.

It is more likely to cause complete or partial intestinal obstruction because the left colonic lumen is relatively narrow, especially the sigmoid colon lumen is tortuous, and most of the stool has formed and dried up to this point, so it is prone to intestinal lumen obstruction. In addition, common symptoms of colon cancer in the left half of the colon can include changes in bowel habits, blood in the stool, diarrhea, abdominal pain, bloating, etc.

The main manifestation of right colon cancer.

In the early stage, it can be abdominal distension and discomfort, and the main clinical symptoms are loss of appetite, nausea, vomiting, anemia, fatigue, and abdominal pain. Right colon cancer can lead to iron deficiency anemia, which manifests as fatigue, fatigue, and shortness of breath. Due to the wide intestinal lumen of the right colon, there are no obvious symptoms in the early stage, and the tumor grows to a certain volume before abdominal symptoms appear, which is one of the main reasons why the right colon cancer is often diagnosed at a later stage.

Accompanying symptoms. Symptoms of local invasion of the tumor.

Colon cancer invades surrounding tissues or organs, causing corresponding clinical symptoms. For example, if colon cancer invades the small intestine that comes into contact with it or adheres to form a fistula, symptoms may cause symptoms of postprandial diarrhea and the elimination of food that has not been fully digested.

Symptoms of tumor metastasis.

Colon cancer can metastasize to the liver, lungs, bones and other parts through hematogenous movement, resulting in impaired liver function, jaundice, dyspnea, dizziness, headache or pain at the site of bone metastasis. If cancer cells spread widely in the peritoneum, symptoms of ascites may occur; If the implant metastases infiltrate or compress the intestinal tube, it can lead to intestinal obstruction, abdominal pain, vomiting, abdominal distention, and cessation of gas and defecation.

1. Early symptom 1: abdominal mass.

About 50% of colon cancer patients can find abdominal masses, which are cancerous tumors or masses that invade and adhere with the omentum and surrounding tissues, which are hard and irregularly shaped, and some masses can have a certain degree of activity with the intestinal tube, while advanced colon cancer can be fixed due to cancer invasion.

2. Early symptom 2: change in bowel habits.

In the case of right colon cancer, the stool is thin in the early stage, pus and blood, and the frequency of bowel movements increases, and when the cancer continues to enlarge and affects the passage of stool, there can also be alternating diarrhea and constipation; Left-sided colon cancer is more likely to present with constipation and worsens as the disease progresses. In addition, if the cancer is located low, there may be a feeling of poor bowel movement and tenesmus.

3. Early symptom 3: blood or mucus in the stool.

In the case of right colon cancer, the amount of bleeding is small and the peristalsis of the colon is well mixed with the stool, which is not easy to see by the naked eye, but the occult blood test is often positive; In the case of left-sided colon cancer, bleeding and mucus are not mixed with feces, and about 1 in 4 patients can see blood and mucus in the feces.

4. Early symptom 4: digestive symptoms.

Presents with bloating, malaise, or dyspepsia-like symptoms. Among them, in the case of right colon cancer, abdominal pain, discomfort or dull pain is mostly present. It may begin intermittently and then become persistent, often in the lower right quadrant, much like a chronic appendicitis flare-up; In the case of left colon cancer, it is mostly manifested as obstruction can be sudden, abdominal cramps, accompanied by abdominal distention, hyperperistalsis, constipation and obstruction of gas, or chronic obstructive symptoms such as abdominal distension and discomfort, paroxysmal abdominal pain, hyperintestinal sounds, constipation, blood and mucus in the stool, etc.

5. Early symptom five: poisoning symptoms.

It is often manifested as anemia, low-grade fever, fatigue, emaciation, edema and other manifestations of patients, especially anemia and emaciation.

Colon cancer is a very slow-growing malignant tumor, the clinical symptoms of right colon cancer are often manifested as unexplained anemia, fatigue, fatigue, loss of appetite, emaciation, dyspepsia, fever and other symptoms, the patient has no intestinal symptoms, occasional abdominal pain and discomfort, and a hard mass can be palpable in the right abdomen in the late stage! Left colon cancer is mostly manifested as a change in bowel habits, diarrhea, constipation or diarrhea and constipation alternately, to strictly speaking, frequent stool, there can be mucus blood in the stool or blood in the stool, mixed with the stool, mostly dark red or purple-brown! When the intestinal lumen becomes thinner and infiltrates the serous layer, vague abdominal pain may occur, and with the narrowing of the intestinal lumen, progressive constipation, constipation, abdominal distention, and finally obstruction may occur.

There are several diseases whose symptoms are easily confused with bowel cancer, such as hemorrhoids, anal fissures, intestinal polyps, dysentery, gastric ulcers, colitis, etc. They are all confused with bowel cancer due to blood in the stool. Among them, 50% of rectal cancer patients are misdiagnosed with hemorrhoids at an early stage.

Most of the early stages of cancer are asymptomatic, and there are no obvious symptoms until the middle and late stages, since there is suspicion, you should go to the hospital for examination, and it is good that the early cancer cells have not spread and recovered. If you have obvious symptoms, then the condition is not optimistic. For example, swollen lymph nodes appear in advanced stages, and colon cancer will have black stools, so pay attention to the convenient color.

If there is blood, it is not cancer, it should be bleeding caused by hemorrhoids caused by dry and hard stools.

Patients with left-sided colon cancer often have constipation. Patients with right-sided colon cancer have pus and bloody stools. But having a lump in the abdomen is the common denominator. There are many ways to diagnose colon cancer. The most accurate is a colonoscopy.

The number and time of bowel movements become more and more when this symptom worsens, the digestion will feel uncomfortable, the stomach will grow, and sometimes there will be persistent pain, even very severe pain, which is co-existing with some symptoms such as stool in the blood or becoming sticky, anemia, or feeling that the whole body has no energy, the body is slightly hot, and so on.

Most of the early-stage colon cancers have no obvious symptoms, and sometimes they may manifest as diarrhea, changes in bowel habits, and many are diagnosed due to the discovery of mass lesions in the intestine during a health examination, or others. More advanced colon cancer is usually divided into the right half and the left half of the colon according to its anatomical position, and the more obvious symptoms of right half colon cancer are anemia, abdominal pain, malnutrition, etc.; Left-sided colon cancer is mostly manifested by changes in bowel habits and blood in the stool, especially non-bloody stools, and can also form in advanced stages with obstruction or other symptoms.

Clinical signs of colon cancer.

The onset of colon cancer is insidious, and only fecal occult blood is positive in the early stage, and gradually becomes bloody stool, dysentery-like pus and bloody stool, tenesmus, sometimes stubborn constipation, the shape of the stool becomes thin, or pasty stool, or diarrhea and constipation alternately, these changes become prominent manifestations of colon cancer. Patients often have varying degrees of abdominal pain, often erosion, necrosis and secondary infection, if it occurs on the right side, it will produce dull pain in the right abdomen, and sometimes postprandial abdominal pain. Left colon cancer is often complicated by intestinal obstruction, sometimes abdominal cramps, accompanied by abdominal distension, hyperintestinal sounds, etc.

Abdominal masses are more common in the right abdomen and are one of the manifestations of right-sided colon cancer, indicating that they have reached the middle and advanced stages, and the surface of the mass may be nodular.

It can usually be pushed, but it is fixed in advanced tumors, and tenderness may be present in co-infection. Patients with colon cancer may have progressive anemia, low-grade fever, progressive weight loss, cachexia, hepatomegaly, edema, jaundice, and ascites.

The symptoms of colon cancer mainly include the following aspects:

1. The symptoms caused by colon cancer tumor blocking the intestine mainly include abdominal pain, bloating, constipation, difficulty in defecation, deformation and thinning of stool.

2. Symptoms caused by bleeding from colon cancer tumors mainly include blood in the stool, black stool, anemia, etc.

3. Symptoms caused by infection caused by colon cancer tumors, including diarrhea, mucus, pus, bloody stools, tenesmus, etc.

4. Symptoms caused by metastasis. Including low back pain, blood in the urine, oliguria, anuria, dyspnea, etc.

The incidence of colon cancer is related to genetics, environment, lifestyle habits, and especially dietary patterns. 1. Environmental factors: It has been proven by research that in various environmental factors 2. Genetic factors:

If a person has a first-degree relative, such as a parent, who has had colon cancer, the risk of developing the disease is 8 times higher than that of the average person. About 1 in 4 new people have a family history of colon cancer. Familial colon polyposis is an autosomal dominant disease, with a prevalence of up to 50% in families, and if not, colon cancer may occur after the age of 10.

3. Colorectal adenoma: The autopsy material study found that the incidence of colorectal adenoma was basically the same as that of colorectal cancer. According to statistics, the incidence of colorectal cancer in patients with a single adenoma is 5 times higher than that of patients without adenoma, and the incidence of colorectal cancer in patients with multiple adenomas is 1 times higher than that of patients with a single adenoma.

Villous adenomatous polyps tend to develop into cancer, with a malignant transformation rate of about 25%, and tubular adenomatous polyps have a malignant transformation rate of 1-5%. 4. Chronic inflammation of the large intestine: It has been reported that the epidemic of bowel cancer is positively correlated with the epidemic area of schistosomiasis, and it is generally believed that some of the inflammatory changes in the intestine due to schistosomiasis will become cancerous.

Other chronic inflammations of the intestine can also become cancerous, such as Crohn's disease or ulcerative colitis, and people with colon cancer are 30 times more likely to develop colon cancer.

There are many factors that go into preventing colorectal cancer. First, to eliminate these bad habits, the mood should be happy and open, not unhappy and unhappy, which will lead to the occurrence of tumors. Second, pay attention to what you eat.

It can help patients get rid of bad habits, such as eating some indigestible, too fine, and less vegetables, these habits are not good, and they should be reassured. In addition, for some pickled products or stale products, traditional kimchi should be consumed as little as possible, because it contains some carcinogens after all.