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Lung metastases. Lung metastasis is cancer that started in another part of the body and spread to the lungs. Itâs sometimes called secondary lung cancer or metastatic lung tumours. Lung metastasis is not the same as cancer that starts in the lung (called primary lung cancer). Some kinds of cancer are more likely to spread to the lung than others.
Metastatic tumors are very common in the late stages of cancer. The spread of metastasis may occur via the blood or the lymphatics or through both routes. The most common places for the metastases to occur are the lungs, liver, brain, and the bones.ost neoplasms can metastasize, although in varying degrees (e.g., basal cell carcinoma rarely metastasize). When tumor cells metastasize, the new tumor is called a secondary or metastatic tumor, and its cells are similar to those in the original tumor.