Can early diagnosis?
At present there is no evidence that meet the requirements to be considered for early diagnosis of lung cancer in the general population. In 2006 published a study that evaluated the role of CT in smokers as a method of early detection. Although initial results were encouraging, did not increase survival. However, due to the frequency of occurrence of this tumor research efforts to get them do not stop.
How is it diagnosed?
The first step is the realization of the history. It is essential to know the symptoms for the patient comes to the consultation and to investigate whether or not smoking, the type of work done, family history of disease and personal history of another tumor. The second step is the realization of the physical examination of the patient for signs and symptoms that could correspond to the Lung Cancer. (more…)
In the early stages of the disease, lung cancer, does not produce any 
A risk factor is any agent that increases the risk of developing a particular disease, ie, a person exposed to this factor has more chances of getting the disease. 
Our body consists of organs and these in turn by a group of cells, which are divided on a regular basis to replace aging or dead and thereby maintain the integrity and smooth functioning of various organs. This process is regulated by a number of mechanisms that tell the cell when to start to divide and when to remain stable. 
The lungs are one of the areas most affected by cancer and we know how to be a smoker goes to affect the possibility of getting sick.
Smoking is the most frequent cause of
The cause of 
Cells are the smallest living units of the human body. One function is to reproduce and die when no longer useful. This process is very neat, in time and space, so there is always that allows the appropriate number of cells for each stage of life.