Involvement of General Practitioners in Lung Cancer Screening

Inclusion Criteria : - Adults aged 50-74 - Active smoker or weaned smoker for less than 15 years, of at least 20 pack-years - Affiliation with a social security scheme or CMU (beneficiary or beneficiary entitled) - Written willing to sign a consent form prior to study participation Exclusion Criteria : - History of lung cancer - Thoracic CT scan performed within the previous year - 1-year follow-up not possible - Inability to travel independently to Hôpital Cochin or Hôpital Bichat for scans - People with severe co-morbidities contraindicating exploration and/or management of lung cancers - People in poor general health (=PS2 and above) - People with a history of cancer under active surveillance by thoracic computed tomography (CT and PET scans) - People with rest dyspnea (=mMRC4) - Recent weight loss, altered general condition or hemoptysis, raising suspicion of progressive lung cancer - Signs of respiratory infection (fever, productive cough) - Patients under guardianship, curatorship or protected adults - Inability to give free written willing to sign a consent form prior to study participation Always talk to your doctor about whether this trial is right for you.