With the advent of an aging society and lifestyle changes, the incidence of cancer continue rising. Since 1982, cancer is the highest cause of death in people, according to the Ministry of Health, Welfare published 2012 of National Health Service Cancer Registry report, every 5 minutes 26 seconds there is a person with cancer, 14 seconds faster than the previous year, The most updated cancer number is than 96 thousand people, equivalent to the incidence of 1 person per 233 people with cancer. This is due to the aging population, changes in lifestyle, obesity increase in population, which makes the cancer continues to increase the number of Taiwan. 2012 the number of cancer occurred in 10 rankings, followed by order, is colorectal cancer, lung cancer, liver cancer, breast cancer, oral cancer (including oropharynx, hypopharynx), prostate cancer, stomach cancer, skin cancer, thyroid cancer, esophageal cancer.

 

    According to studies, promoting large-scale cancer screening can reduce cancer mortality. For example, including fecal occult blood test can reduce 20-30% of colorectal cancer mortality; Pap screening can reduce the 60-09% of cervical cancer and mortality; mammography can reduce breast cancer mortality 30%; and above 35 years old male alcoholic drinks and tobacco habits, their visual inspection of the oral mucosa may be reduced by 40% of oral cancer mortality. Therefore, early detection of cancer screening for cancer or pre-cancerous lesions and early treatment not only reduce mortality, but also can block the progression of pre-cancerous lesions to cancer.

 

    Although medicine and technology continue to progress, the cancer threat to human health has not yet been properly control. In cancer prevention, early screening if the cancer can treatment earlier which is very helpful cancer control. Therefore, cancer detection has become the frontline for cancer prevention, by using in-vitro diagnostic test, and the testing samples like blood, feces, urine, or other genetic material are easily obtained. 

 

    In case of long-term smoking, betel nuts, drinking, staying up late, exposure to chemicals, dust, heavy metals or radioactive substances people or someone in the family has died of cancer, or someone with cancer, some once with family history; there are health sense of hope that a thorough understanding and control of their physical condition, should be on cancer screening regularly. In addition, the cancer screening tool can also be used as prognostic assessment of drug efficacy and indicators post-surgery or post-chemotherapy, and also as the recurrence and metastasis of tracking tool.

 

    Cancer detection is a preventive measurement, mainly for identify suspicious cancer lesions early, and it is suggested to have cancer screening at least once or twice annually. Through regular cancer screening, together with life-style adjustment properly according to cancer screening outcome, it is expected to achieve the ultimate goal of cancer prevention.