hematogenous pulmonary metastasescannonball pulmonary metastasesbilateral pulmonary metastasescavitating lung metastaseslung metastasis treatmentmetastatic lung diseaseleiomyosarcoma metastasis to lungmetastatic pulmonary adenocarcinomaosteosarcoma lung metastasismultiple lung metastasislymphoma metastasis to lunglung metastasis melanoma