The incidence of cancer is increasing, and many people are afraid of being linked to cancer once they develop a certain condition. Although this is a bit unfounded, but some common diseases do have inextricable links with cancer. 1, hepatitis Although “viral hepatitis patients as long as live long enough, will eventually develop liver cancer” sounds a little absolute, but he is indeed one of the most important causes of liver cancer. Therefore, high-risk groups must be checked regularly for early diagnosis and treatment. 2.Chronic ulcerative diseases Mouth ulcers and stomach ulcers are very common, and many people often do not take these “minor diseases” seriously. In fact, chronic ulcers may become cancerous if they exist for a long time. General mouth ulcers, after appropriate treatment, 7-10 days can be healed, but if the same ulcer weeks or even a month is not good, it may be closely related to oral cancer. Stomach ulcers are also like this, if repeated episodes occur, the gastric mucosa is repeatedly stimulated, there is a possibility of malignant transformation and stomach cancer. 3.Diabetes Some studies point out that the prevalence of cancer in diabetic patients is higher than that in non-diabetic patients, and the more obvious cancers include endometrial cancer, breast cancer, prostate cancer, colon cancer, pancreatic cancer, etc. In this regard, some experts analyze that this is the reason why diabetic patients are more susceptible to cancer. In this regard, some experts believe that this is related to the high incidence of obesity in patients with diabetes, but also with high blood sugar. In addition, studies have shown that increased blood insulin levels of glucose-lowering drugs may also increase the risk of cancer in patients. 4.Gastrointestinal polyps Many gastrointestinal cancers are evolved from polyps, especially adenomatous colon polyps, the cancer rate is higher. Some surveys show that the incidence rate of colon cancer in patients with colon polyps is 3-5 times higher than that of the general population, and the incidence rate in patients with multiple polyps can be 10 times higher than that of the general population. Gastrointestinal polyps are affected by many factors, such as size, type, number, etc. Once diagnosed, they should be treated. 5, cervical erosion Investigation found that women with cervical erosion, the incidence of cervical height lesions significantly higher than those without cervical erosion. Some experts said, “The symptoms of cervical cancer are very similar to the performance of cervical erosion, so it is easy to be ignored and need to be extra vigilant.” 6, cystic breast hyperplasia According to statistics, about 20% of cases of adenomatous hyperplasia that do not heal for a long time can be malignant, and the chances of women with cystic breast hyperplasia suffering from breast cancer are four times higher than those of healthy people. Patients suffering from cystic breast hyperplasia should have regular checkups in order to find out whether there is cancer in time. 7, thyroid nodules The occurrence of thyroid nodules is related to age, gender and history of radiation exposure to the neck. Statistics show that the incidence of thyroid nodules in women is four times higher than that in men. Multiple thyroid nodules are mostly benign, and a single thyroid nodule is more inclined to be malignant, so if you find a lump in the thyroid gland, go to the hospital in time to confirm the diagnosis.