21st February 2025

A 50-year-old man has a chest X-ray performed to look for rib fractures after falling from a ladder.

A 50-year-old man has a chest X-ray performed to look for rib fractures after falling from a ladder. No rib fractures are identified, but a mediastinal abnormality is noted so a CT chest is carried out. The CT chest shows an anterior mediastinal mass. 

What is the most likely cause of the mediastinal mass?

Select the SINGLE most appropriate option from the list below. Select ONE option only.