30th July 2020

A 45 year old man of tall stature presents with dyspnoea to the emergency department

A 45 year old man of tall stature presents with dyspnoea to the emergency department. He is diagnosed with a pneumothorax following a chest x-ray and is treated accordingly. When this patient was clerked in, the doctor who auscultated his heart noticed a high pitched diastolic heart murmur.

For the patient above, please select the SINGLE most likely cause of the murmur. Select ONE option from the list above.