The incidence of cancer is increasing, and many people are afraid of being linked to cancer once they develop a certain disease. This is a bit of an unfounded fear, but some common diseases are indeed inextricably linked to cancer. If you have the following chronic diseases, it is recommended to go to the hospital as soon as possible for examination and treatment. 1, hepatitis: Although “viral hepatitis patients will eventually develop liver cancer if they live long enough” sounds a bit absolute, but it is indeed one of the most important causes of liver cancer. Therefore, high-risk groups must have regular checkups for early diagnosis and treatment. Chronic ulcerative diseases: Mouth ulcers and stomach ulcers are very common, and many people often do not take these “minor diseases” seriously. However, experts said that chronic ulcers may become cancerous if they exist for a long time. General mouth ulcers, after appropriate treatment, 7 to 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, gastric mucosa is repeatedly broken and stimulated, it may be malignant and gastric cancer occurs. 3.Diabetes: Some researchers pointed 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 and so on. In this regard, Luo Rongcheng analyzed that this is related to the high incidence of obesity among diabetic patients, but also related to high blood sugar. In addition, some studies have shown that glucose-lowering drugs that increase blood insulin levels may also increase the risk of cancer in patients. Gastrointestinal polyps: many gastrointestinal cancers are evolved from polyps, especially adenomatous colon polyps, with higher cancer rate. Some surveys show that the incidence rate of colon cancer in patients with colon polyps is 3 to 5 times higher than that of the general population, and it can be 10 times higher than that of those with multiple incidence. Experts said that gastrointestinal polyps are affected by many factors, such as size, type, number, etc. Once diagnosed, they should be treated. 5, cervical erosion: the survey found that women with cervical erosion, cervical high incidence of lesions significantly higher than those without cervical erosion. Experts say: “Cervical cancer symptoms are very similar to the performance of cervical erosion, so it is easy to be overlooked, and need to be extra vigilant.” 6, breast cystic hyperplasia: according to statistics, adenomatous hyperplasia long-term cases, about 20% can be malignant, cystic breast hyperplasia of women suffering from breast cancer is four times the chance of healthy people. Patients suffering from cystic breast hyperplasia should have regular checkups in order to find out whether there is cancer at an early stage. 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.