Risk Factors for Lymph Node Metastases and Prognosticators of Survival in Patients Undergoing Pulmonary Metastasectomy for Colorectal Cancer

Rectal cancer, required anatomic resections, and multiple metastases were risk factors for LNM. Rectal cancer, M-status of the primary tumor, number of pulmonary metastasis, and disease progression during pre-PM chemotherapy were independent negative predictors of survival, stratifying patients with poor prognosis who may benefit from chemotherapy before or after PM.