The first step of cancer prevention, screening is essential! Remember to do these five common cancer screening regularly.

Cancer generally refers to malignant tumors of body tissues, such as gastric cancer, liver cancer and breast cancer. Cancer has the characteristics of metastasis and infiltration, and the causes of cancer are complex. Smoking, alcoholism, environmental pollution and unhealthy diet may all induce cancer. The way to prevent cancer is to avoid its causes and do a good job in cancer screening. The following are screening tests for five common cancers. 1. Breast cancer-the cancer screening method with the highest incidence among women in China: 1. Mammography: This screening method is one of the recommended methods for breast cancer screening in recent years, which can find the lump well and is suitable for women over 40 years old. Women in this age group are not sensitive to radiation and are more likely to find breast abnormalities. It is recommended that women aged 45-55 have an annual checkup, and women over 55 can do it once a year or every two years according to their own wishes. 2, breast color photography: this method is suitable for young women and women with ideal and dense breasts, which can help us understand whether there are hyperplasia and nodules in the breast. 3. Magnetic resonance imaging: This method can find multi-focus and multi-center small lesions well, and can be used as one of the methods for early diagnosis of breast cancer. 4. Cytological examination: It is a simple, economical, safe and accurate examination method, which is suitable for the diagnosis of breast malignant tumor. High-risk group: 1, people with a history of chest radiation. 2. People who have never given birth or given birth too late, and people over 40 who are not pregnant or breastfeeding. 3. People with family history, genetic history and disease history. 4, high exposure to estrogen, long-term use of estrogen-containing drugs or health products, long-term exposure to estrogen-like chemicals. Examination method of liver cancer: 1. Ultrasonic examination: The diagnostic rate of this method can reach 90%, and the size, shape and location of the tumor can be found. It is the most commonly used localization and qualitative diagnosis method for liver cancer. 2. Alpha-fetoprotein (AFP): The diagnosis of liver cancer is relatively specific. In clinic, 30% of patients with liver cancer have negative AFP test results, but the positive rate will be higher if AFP is detected at the same time. Another reminder is that 45 to 55 years old is the age group with high incidence of liver cancer, and the peak age of death is 55 to 65 years old. Therefore, it is recommended to have a regular physical examination from the age of 40 to 45, and a regular physical examination every year after the age of 45. 3.CT examination: The diagnostic rate of liver cancer can reach 90%, and the tiny cancer focus of 1.0cm can be detected. High-risk population: 1, patients with liver diseases such as hepatitis B, hepatitis C and alcoholic cirrhosis. 2. People who eat moldy and polluted foods (including aflatoxin) and foods containing nitrite for a long time. 3. People with family history and genetic history of liver cancer. Third, colorectal cancer examination method: 1, fecal occult blood test: This examination is the most common early method of colorectal cancer, and 50% of colorectal cancer patients and 30% of adenomas have positive occult blood test. 2, rectal digital examination: This is a common clinical examination method, which can effectively find rectal cancer and colorectal cancer. 3. Endoscopy: including proctoscopy, sigmoidoscopy and colonoscopy, this method can well find colon polyps and make pathological examination. High-risk population: 1, people with a history of adenoma and a family history of colorectal adenocarcinoma. 2. People with persistent inflammatory intestinal diseases. Known or suspected genetic syndrome. Cervical cancer examination method: 1. Cervical smear cytology: this method is the main method for screening cervical cancer, and it is usually taken in the cervical transformation area. 2. hpv detection: This method mainly checks whether there is hpv virus, such as staining microscopy and human papillomavirus DNA detection. You can check whether it is infected with human papillomavirus. 3. Cervical iodine test: Healthy cervical squamous epithelium will turn brown or dark brown after being coated with iodine solution. If there is no color change, there may be lesions, so biopsy specimens are usually taken from unstained parts. 4. Other examinations: such as * * * endoscopy, cervical biopsy and cervical conization can assist doctors in diagnosing cervical cancer. High-risk groups: 1, women with poor or low immunity 2, patients with sexually transmitted diseases such as AIDS infection, human papillomavirus and herpes simplex virus. 3, premature sexual behavior, early pregnancy and premature birth of many women. 4. Women with cervical lesions (long-term chronic cervicitis, cervical precancerous lesions, etc.). ). Five, lung cancer examination methods: 1, ECT examination: whether there is bone metastasis can be found earlier, and both X-ray and bone imaging have positive findings. For example, the bone reaction at the focus is static and the metabolism is slow, which means that bone imaging is negative and X-ray is positive, which can effectively improve the diagnostic rate. 2. Chest X-ray examination: Through this method, the size and location of lung cancer can be determined and understood, and pulmonary lesions such as emphysema and atelectasis caused by bronchial obstruction can also be found. 3. Sputum cytology: This method is an effective method for lung cancer screening and diagnosis. Most patients with primary lung cancer have exfoliated cancer cells in their sputum. Through sputum cytological examination, central lung cancer and high-risk groups can be well diagnosed: 1 and 50-70 years old, who smoke more than 30 packs a year, including those who quit smoking for less than 15 years. There is another risk factor for people over 2.50 years old who smoke more than 20 packs a year. Everyone is afraid of cancer. How can I not have cancer all my life? From the most reliable medical point of view, there are many factors that induce cancer, among which we can control it! It is very important to find and prevent cancer in time. Disclaimer: The above content comes from the Internet, and the copyright belongs to the original author. If there is any infringement of your original copyright, please let us know and we will delete the relevant content as soon as possible.