Imaging Case of the Week 185 Answer

The frontal chest x-ray shows a triangular density behind the heart, silhouetting the medial aspect of the left hemi-diaphragm. The left main bronchus is depressed. These features are suggestive of a left lower lobe collapse.

left lower lobe collapse

The lateral view shows increased opacity over the lower thoracic vertebrae (normally should be darker) and posterior displacement of the oblique fissure.

There is also a mild left sided pleural effusion.

This patient had a temperature and elevated inflammatory markers. He was treated with intravenous antibiotics and got better.