Secondary prevention: for the preventive screening of high-risk groups, internationally recognized more effective screening includes: cervical smear screening for cervical cancer; Breast self-examination, clinical examination and X-ray examination for breast cancer; Stool occult blood, anal digital examination, sigmoidoscopy and colonoscopy for colorectal cancer; Detection of prostate cancer with serum prostate specific antigen. Carry out anti-cancer propaganda, be alert to precancerous symptoms, and pay attention to ten early symptoms of cancer: a lump in any part of the body, such as breast, neck or abdomen, especially a gradually increasing lump; Ulcers that occur in any part of the body, such as tongue, cheeks, skin, etc. No trauma, especially long-term persistence; Abnormal bleeding or secretion, such as irregular vaginal bleeding or increased secretion in women over middle age; Abdominal distension, burning pain, foreign body sensation or progressive dysphagia after eating; Chronic dry cough, hoarseness or blood in sputum; Long-term dyspepsia, progressive loss of appetite and emaciation have not yet found a clear reason; Changes in stool habits or bloody stools; Nasal congestion, nosebleeds, unilateral headache or diplopia; Sudden increase or rupture of vegetation or nevus, bleeding, or primary shedding; Painless hematuria.
Three-level prevention: provide standardized diagnosis and treatment plan and rehabilitation guidance for patients with malignant tumor, prevent postoperative disability and tumor cell metastasis through comprehensive treatment, try our best to alleviate patients' pain, prolong patients' life, improve survival rate and quality of life, and provide pain relief and hospice care for advanced patients.