20th February 2025

A 65-year-old retired nurse is seen in clinic post investigations for hypersensitivity pneumonitis.

A 65-year-old retired nurse is seen in clinic post investigations for hypersensitivity pneumonitis. 

As part of these investigations, a bronchoalveolar lavage is performed. What abnormality would you expect to see when analysing the lavage samples if the diagnosis is correct?

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