The Value of PET-CT in Predicting Segement Specific Lymph Nodes Metastasis in Non Small Cell Lung Cancer
This study is a multicenter prospective clinical study that aims to evaluate the predictive value of preoperative PET-CT results (such as SUV uptake, size of tumor lymph nodes, and differences in FDG uptake compared to surrounding tissues) for lymph node metastasis in patients with non-small cell lung cancer. During surgery, all patients underwent systematic mediastinal lymph node dissection. The final pathological results were used to assess the predictive value of PET-CT for segment-specific lymph node metastasis.
• Solitary tumor, or multiple tumors with only ground-glass nodules (GGNs) apart from the primary lesion.
• Diameter of the primary lesion ≤5cm, with a CTR between 0.5 and 1.
• No enlarged mediastinal lymph nodes observed on preoperative contrast-enhanced CT.
• Pathological confirmation of non-small cell lung cancer (NSCLC) either before or during surgery.
• Systematic lymph node dissection performed during surgery.
• No prior radiotherapy or chemotherapy for initial treatment.
• No history of malignant tumors.