Independent Predictors Analysis and Model Construction of Cavitary Central Lung Cancer

Inclusion Criteria: 1. Age：older than 18 years； 2. Clinical or pathologically confirmed central lung cancer; 3. Lesions without cavities at first diagnosis of central lung cancer; 4. Performed complete laboratory and imaging research at the first diagnosis of the central lung cancer; 5. Patients with cavities formation during follow up, and the cavities were independently confirmed by at least 3 imaging experts; 6. Patients with complete medical records; Exclusion Criteria: 1. Patients suffering other malignant tumors; 2. Patients missing the imaging data; 3. Patients missing the clinical data.