title: Diagnostic dilemma.
authors.forename: S D
authors.initials: SD
authors.lastname: Liao
authors.forename: P J
authors.initials: PJ
authors.lastname: Akin
mesh_terms: D018549:Cryptogenic Organizing Pneumonia / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography