At present, although in the field of treatment for breast cancer, stomach cancer, colon cancer and cervical cancer have achieved a certain progress and patient’s survival time has extended in different degree. But lung cancer patients survival time doesn’t change obviously. According to the statistics, the lung cancer patients of five years’s survival time are only 10%-15%, the main reason is that there is problem of the early diagnosis of lung cancer .

Lung cancer is not only a high degree of malignant but also development and transfer speed is very fast. Due to early symptoms are not obvious or symptoms are similar with ordinary respiratory system diseases, it is difficult to cause patients and the doctor's attention; If the cancer cells transfer to liver, brain or bone, it has already been late and lost treatment opportunity. In clinical, there are more than 70% patients having this symptoms and ensuring diagnosis, it has been lung cancer late, it not only losses the best time of comprehensive treatment, but also it reduces patients survival opportunity and survival quality. Therefore, early detection, early diagnosis and early treatment are the key of lung cancer prevention. So we must be careful with early signal of lung cancer, such as cough. In addition, there is chest tightness and fever.

For a long time, using chest X-ray to check lung disease is the most common medical project. But the latest research shows that Computed Tomography examination is effective method. For more than 40 patiens, if they have typical symptoms, they should go to see doctor in time and do the necessary examination, such as chest radiograph, bronchoscopy, chest CT and sputum cells check.

Now, radiotherapy has been the main treatments of non-small cell lung cancer; For early smaller mass, stereotactic radiotherapy has been one of standard treatments which can replace surgery; For locally adanced patients, radiotherapy and chemotherapy have been standard way of treatment for lung. The clinical data shows that improving radiation dosage of tumor local can increase tumor control rate and long-term survival rate of patients.

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