RT Book, Section A1 Doherty, Gerard M. SR Print(0) ID 58094080 T1 Lung Lesions, Metastatic T2 Quick Answers Surgery YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN LK accesssurgery.mhmedical.com/content.aspx?aid=58094080 RD 2024/03/29 AB • Pulmonary metastases occur via hematogenous spread from primary site; lymphatic and transbronchial spread are rare• Secondary metastatic spread to pulmonary and mediastinal lymph nodes may occur• Known extrathoracic primary cancers:-Multiple pulmonary lesions: Metastatic disease-Solitary lesions: Benign disease, 20%; new primary lung cancer, 20%; metastatic disease, 60%• Solitary squamous cell nodules should be addressed as a new primary lung cancer