19th May 2025

A 58-year-old gentleman is admitted with gradually progressive shortness of breath which is worse on exertion and hypoxaemia.

A 58-year-old gentleman is admitted with gradually progressive shortness of breath which is worse on exertion and hypoxaemia. Chest x-ray shows bilateral pulmonary infiltrates. He is being treated with gemcitabine as part of his systemic anti-cancer therapy for pancreatic adenocarcinoma. You suspect this is responsible for his symptoms and radiographic findings. Which one of the following is least appropriate as part of this patient’s diagnostic workup?

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