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A member asked:
Are tumors in the lung usually a result of metastatic cancer?
9 doctors weighed in across 2 answers
No: Lung "tumors" may be benign or malignant (=cancer). Cancers in the lung may be primary lung cancer (eg, small cell or non-small cell lung cancer, mesothelioma) or other cancers (eg lymphoma, thymoma, etc). Cancers from other primaries (eg breast, colon, etc) may spread (metastasize) to the lung.
Answered 12/28/2018
6.4k views
Often: They are either metastatic lesions that spread from other parts of the body, or they are "primary" lung cancers that originated in the lung tissue. Most often if multiple tumors, they would be metastatic lesions, but if there was a single spot seen in a smoker, it may be a primary tumor.
Answered 12/28/2018
5.1k views
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