7th February 2024

A 56-year-old male presents with an 18-month history of progressive shortness of breath.

A 56-year-old male presents with an 18-month history of progressive shortness of breath. He has an associated dry cough with this. He states that he previously could walk up to 50 meters without issue but now needs more breath mobilising up the stairs. Examination reveals bilateral fine crepitations. CXR revealed bilateral fine reticulation predominantly affecting the lung bases with bilateral volume loss. 

Which of the following test results are expected, given the underlying diagnosis?