17th January 2024

A 37-year-old gentleman presents with bilateral hilar lymphadenopathy on chest x-ray.

A 37-year-old gentleman presents with bilateral hilar lymphadenopathy on chest x-ray. He has a history of non-specific symptoms, including fatigue, weight loss and myalgia. You are considering a diagnosis of sarcoidosis but do not have enough certainty based on current investigation results. 

Which is the most appropriate investigation here to confirm a diagnosis of sarcoidosis?

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