Objective: Proposal for an electronic data base for patients with lung cancer (LC) and lung cancer screening (LCS). Method: Interdisciplinary project for the database (association with mathematics/informatics specialists). Result: The electronic database for patients with LC is a project of the Discipline Pulmonology. The database will be useful both for monitoring patients with LC and for registering people entering in LCS. The electronic database will be accessible (with password) to pneumologists, specialists in imaging, oncologists and will permit data access and data transfer (including images) and telemedicine. There is currently a National Global Cancer Registry but it underestimates LC cases (does not include cases that are not recording for special treatment, cases that refuse oncological treatments, those living in other country or geographic areas, and patients without insurance). Our database will not work only as a simple statistic list, but it will include all cases particularities and issues: demographic data, risk factors (smoking, exposure), medical history, investigations as imaging and written result (computed tomography CT, PET-CT, bronchoscopy, biopsies), intervention, mean of confirmation, histological types, staging, immunohistochemistry, blood tumoral markers, treatment (surgery, radiotherapy, chemotherapy, immunotherapy, palliation), performance index, consultation, evolution. Our database could be implemented in the regional or national frame. LC screening will consist in clinical exam, bronchoscopy, low dose CT, biomarkers in high risk patients: heavy smokers (over 25 pack/years), exposure to harm noxious, associated COPD and low lung function, previous other neoplastic disease, age over 50, nodules in chest x-ray. [ABSTRACT FROM AUTHOR]