Correct!
1. The chest radiograph shows a circumscribed left lung mass

The frontal chest radiograph shows a circumscribed lingular mass. Small nodules are not present, nor is there evidence of a mediastinal abnormality or interstitial lung disease. No consolidation is present.

Which of the following represents the next, most appropriate step for the assessment of the findings at chest radiography?

1. 18FDG-PET scan
2. Bilateral, frontal shallow (5°) oblique images to distinguish true lung infiltration from artifact or a chest wall lesion
3. Fluoroscopic-guided percutaneous transthoracic needle biopsy
4. Thoracic CT scan
5. Thoracic MRI

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