CT imaging data from lung cancer (NSCLC and SCLC) patients prior to the initiation of immunotherapy (and possibly also after treatment) will be collected. The processing pipeline includes automatic tumor segmentation, radiomics feature extraction, feature selection, and construction of a classification model.

Inclusion Criteria:

1. Patients were treated for lung cancer in Wuhan Union Hospital from July 2025 to July 2026;
2. Aged > 18 years old;
3. At least one CT scan before treatment;
4. Tissue biopsy pathological examination confirmed the diagnosis of the above tumors.

Exclusion criteria:

1. Poor image quality;
2. Incomplete clinical data or loss of follow-up;
3. Presence of another primary malignancy other than lung cancer;
4. Unclear pathological diagnosis.

Patients with lung cancer