5th September 2020

A 25-year-old man of tall and slim build presents to A&E with severe difficulty breathing of rapid onset

A 25-year-old man of tall and slim build presents to A&E with severe difficulty breathing of rapid onset. He has a heart rate of 115 bpm and a blood pressure of 120/80 mmHg. He has a chest X-ray, the radiograph of which is displayed below (nb. the white arrow is pointing towards the pleura). What is the most accurate diagnosis?

Image source: Wikipedia

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