Correct!
Answer: 5. Left lower lobe nodule
The chest radiograph shows a nodule faintly seen through the left retrocardiac region on the frontal image, seen to reside over the anterior lower thoracic spine on the lateral image.
Figure 2A and B: Frontal (A) and lateral (B) chest radiography shows a small, circumscribed nodule (arrow) in the left retrocardiac region on the frontal image (Figure 2A) and projected over the spine on the lateral chest radiograph (Figure 2B).
No old chest X-rays are available.
What is the next step in evaluation?