Plan for Systematic Identification of Lung Cancers of Occupational Origin: Implementation Study

Inclusion Criteria: * primitive CBP Patients; * Patients employees or have been employees of the general scheme and / or the agricultural social security system; * Patients understand French. Exclusion Criteria: * Patients recognized occupational disease for CBP; * recognized disability in patients for CBP by the social security system; * Patients who have never been employees of the General or the agricultural social security system plan * Patients already included in phase 1 of the study; * Refusal of participation, signed consent major patients protected under guardianship; * Patients unable to understand the course of the study.