In recent years, the incidence of colorectal cancer has shown an increasing trend year by year, which is a malignant tumor that occurs in the rectum or colon area. Once the disease occurs, it will cause patients to have a series of abnormal defecation phenomena, and if it is not treated in time, it will seriously affect the patient's life.
In the period before the onset of colorectal cancer, many patients will have precancerous lesions, if they can be detected early, they can suppress cancer to the greatest extent.
So in recent years, more and more people will undergo colonoscopy on a regular basis. So, can a colonoscopy really detect colorectal cancer? Let's take a closer look at it.
Can colonoscopy detect colorectal cancer?
First, the appearance of symptoms without examination increases the incidence of bowel cancer
In daily life, many people often have some changes in bowel movements, such as repeated diarrhea or constipation, as well as abdominal distension and pain. Or there will be a sudden increase in the number of bowel movements per day, each time the defecation is particularly urgent, and there will still be a feeling of inexhaustible defecation after defecation.
In addition, many people will have a thin stool shape, or deformed, and there is some blood in the stool.
Once this phenomenon occurs, many people will think that it is caused by some bad eating habits, or think that it is caused by inflammation of the gastrointestinal tract, and generally will not receive formal examination and treatment.
Just take some drugs to treat gastrointestinal diseases, or laxative and antidiarrheal drugs. Once these symptoms appear and are not tested, the incidence of colorectal cancer will naturally increase.
Second, abdominal color ultrasound and other examinations are easy to misdiagnosis
If you go to the hospital for these conditions, if you do not take colonoscopy, such as when you perform a color ultrasound examination of the intestinal area, you cannot directly see the inside of the intestine, and you will most likely be diagnosed with enteritis.
If there is a phenomenon of blood in the stool, the probability of being diagnosed with hemorrhoids and fissures will be particularly high. Moreover, the misdiagnosis rate of bowel cancer has reached more than 41.5%, of which the misdiagnosis rate of young people with colon cancer has reached between 72.8% and 80%.
3. Colonoscopy directly observes internal intestinal lesions
When you go to the hospital for colonoscopy, you can directly observe all the lesions inside the intestine. The instrument for colonoscopy is a fiber hose with a length of about 140 cm and a diameter of about 1 cm, with a miniature camera on the end.
When examined, the hose is inserted from the part into the large intestine, which can detect a series of lesions in the large intestine, including some inflammation, ulcers or polyps, and tumors.
Especially in the early stages of colorectal cancer, colonoscopy can be used to see the inside of the intestine very intuitively. If there is a precancerous lesion of bowel cancer, or a highly suspected tumor phenomenon, some tissues can be taken for examination, and the most accurate examination results can be obtained.
If you have some intestinal polyps, you can also directly remove them after the doctor's evaluation. And at the 2019 Wisdom and Health Development Summit, Professor Li Zhaoshen of the China Institute of Engineering said that if colonoscopy is performed before the age of 45, it can be kept for 5 to 10 years without colorectal cancer.
All in all, the reasons for the increasing incidence and mortality of bowel cancer are related to some poor dietary habits and other habits, and to the lack of regular colonoscopy. During colonoscopy, all lesions in the intestine, including various inflammations, ulcers, polyps and tumors, are very accurately viewed by the corresponding instruments.
Therefore, if there are repeated changes in bowel movements in daily life, as well as people without symptoms around the age of 45, it is best to conduct a colonoscopy on a regular basis, which can basically ensure that colorectal cancer will not occur within 5 to 10 years and minimize the incidence of bowel cancer.