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Irregular shaped ill defined right apical lung mass is seen invading the right aspect of T2 vertebral body and its transverse process, costovertebral junction and the adjacent 2nd rib, and inferiorly the 3rd rib. Superiorly it extends to the root of the neck. A background of centrilobular and paraseptal emphysema noted.
Diagnosis: Pancoast tumor (adenocarcinoma by biopsy)