In recent years, with the development of low-dose chest CT screening, more and more ground glass nodules have been found. Meanwhile, presenting as Ground-glass nodule (GGN), the early-stage lung adenocarcinoma patients with lung cancer family history have been emerging increasing in recent years in East Asian.

This prospective cohort study, with both a cross-sectional and a longitudinal part, will include patients with pulmonary ground glass nodule, which were proven malignant disease.

All participants will be asked to complete questionnaire to build the clinical database of GGN patients with detailed family history. Furthermore, blood and surgical tumor samples will be collected as a specific biobank. And the blood samples of other family members of participants will be collected, with their consent and knowledge.