Genetic testing for lung cancer

The national cancer center published the newest data on metropolitan cancer report in China at the beginning of 2017. Ten thousand patients are diagnosed with cancer every day. The cumulative risk of cancer for metropolitan citizen aged from 0 to 85 years old is as high as 36%, and the mobility rate is increased dramatically after 40 years old, reach the peak at age 80. Lung cancer is the no. 1 dissease in both mobility and modality rates in metropolitan area.

Most of Lung cancers are derived from the mucosal epithelial cells of bronchus. They can be classified by histological staining and appearance as: small cell lung cancer and non-small cell lung cell, or categorized by tissue pathology as: squamous cell cancer, non-differentiated cancer, adenocarcinoma, alveolar cell carcinoma. Smoking is considered one of the major causal factors for lung cancer. About 8% of lung cancers resulted from genetic background, the risk for the individual to develop lung cancer will increase by 2.4 folds if his blood kin is a lung cancer patient. In addition, chronic obstructive pulmonary diseases and pulmonary fibrosis will increase the individual susceptibility to lung caner. Most of the lung cancer patients are diagnosed as at late stages. The more advanced the lung cancer lesions are classified, the shorter the patient will survive, and the prognosis is poorer.