Colorectal Cancer (Colon Cancer)

Colorectal cancer is a common malignancy in the gastrointestinal tract, and the third most common cancer, colon cancer patients every new year around 1,230,000 in the whole world. For the majority of the age of onset of 40 years, 30 years of age account about 15% of events. See more males to female ratio of 2-3: 1.

The main symptoms of colon cancer

There is no obvious early symptoms of colon cancer. With the progression of the disease can occur irritation, and changes in bowel habits, it can be seen as diarrhea or constipation, sometimes alternating diarrhea and constipation, and abdominal pain are common.

Secondly, colon tumors also cause symptoms of bloody stools without pain, usually the amount of blood is not a lot, sometimes bright or dark red, bleeding usually occurs intermittently, as if the position of the tumor is rather high, the blood mixed with the stool, sometimes bloody stools and also slimy.

With the passing of the disease, so that the spread of the tumor into the bowel lumen stenosis caused by intestinal obstruction, the patient's first symptoms of bloating, abdominal discomfort, and paroxysmal abdominal pain, hyperactive bowel sounds, constipation or stool into thin (shaped like a pencil) and flatulence and water stops.

Advanced stage colon cancer often affects surrounding tissues and organs, such as the bladder and prostate and other nearby tissues, causing urinary frequency, urgency and dysuria. When the tumor invasion of the lumbosacral plexus and the lumbar sacral pain occur.

Causes of Colon Cancer:

1. Genetics: Colon cancer has a certain genetic factors, family history of colon cancer are more prone to this disease. Some intestinal adenoma is an autosomal dominant inheritance, high heritability.

2. Diet: In addition to some of the foods that contain nitrites, colon cancer is a cause of long-term food with high fat is the main reason.

3. Bowel disorders: acute and chronic intestinal inflammation, intestinal polyps, ulcers and other digestive disorders, which damage the function of the intestine, which can cause colon cancer.

4. Other diseases: Schistosomiasis and other parasitic diseases, can cause damage to the intestinal mucosa, causing ulcers, inflammation, there adenomatoid hyperplasia, and induce colon cancer.

5. Micronutrient deficiencies: Particularly molybdenum, will increase the risk of bowel cancer.