Lung to lung metastasis is seen in -
Adenocarcinoma of lung
Squamous cell carcinoma
Small cell carcinoma
Neuroendocrine tumor of lung
Pulmonary metastasis from primary lung cancer and its treatment. On admission, pulmonary metastases were radiographically found in 44 of 529 patients with adenocarcinoma (8.3%), 8 of 427 patients with squamous cell carcinoma (1.9%) and 2 of 150 patients with small cell carcinoma (1.3%) Ref Harrison 20th edition pg 559
Oncology