The incidence of cancer is increasing, and many people are afraid of being related to cancer once they suffer from certain diseases. Although this is a bit worrying, some common diseases are indeed inextricably linked to cancer. Hepatitis: Although it sounds a bit absolute that “viral hepatitis patients will eventually develop liver cancer if they live long enough”, it is indeed one of the most important causes of liver cancer. Therefore, it is important for high-risk groups to have regular checkups 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. However, experts say that chronic ulcers may become cancerous in the long term. General mouth ulcers can be cured in 7-10 days after proper treatment, but if the same ulcer is not well for weeks or even a month, it may be closely related to oral cancer. “Stomach ulcer is also like this, if it occurs repeatedly and the gastric mucosa is repeatedly stimulated by breakage, it may become malignant and gastric cancer may occur. 3, diabetes: Some researchers 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, Luo Rongcheng analyzed that this is related to the high prevalence of obesity among diabetic patients, and 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. 4. Gastrointestinal polyps: Many gastrointestinal cancers evolve from polyps, especially adenomatous colon polyps, which have a higher cancer rate. Some surveys show that the incidence of colon cancer in patients with colon polyps is 3 to 5 times higher than the general population, and can be 10 times higher in those with multiple cases. Experts say that gastrointestinal polyps cancer is affected by a variety of factors, such as size, type, number, etc., once diagnosed, should be treated. 5, cervical erosion: survey found that women with cervical erosion have a significantly higher incidence of high cervical lesions 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 requires extra vigilance.” 6.Cystic hyperplasia of breast: According to statistics, about 20% of cases of adenomatous hyperplasia that do not heal for a long time can become malignant, and women with cystic hyperplasia of breast have 4 times the chance of breast cancer than healthy people. Patients with cystic breast hyperplasia should have regular checkups for early detection of cancerous changes. 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 is four times higher in women than 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 your thyroid gland, go to the hospital for a timely checkup to confirm the diagnosis.