Do you know if pancoast tumors are cancerous?

Yes: A Pancoast tumor, is a tumor of the pulmonary apex. It is a malignant lung cancer that is primarily defined by its location situated at the top end of either the right or left lung. It tends to spread to nearby tissues such as the ribs and spine Most of these lesions are non-small cell cancers. The tumor can cause compression of a brachiocephalic vein, subclavian artery, and phrenic nerve