Question 2344

Question contributed by Amanda Er ◉

Disclosures and question data

Which of the following is FALSE in fibrotic hypersensitivity pneumonitis (HP)?

air trapping, normal lung and ground glass densities are highly specific for the diagnosis

a pattern of fibrosis that is concordant with HP is termed "axially diffuse", implying both a peripheral and peribronchovascular distribution

evidence of airway involvement on CT, such as air trapping, is required as per the 2020 international clinical practice guideline for HP diagnosis

fibrotic HP commonly has an upper zone predominance