title: Tree-in-bud pattern: spectrum of cause.
authors.forename: Akshay K
authors.initials: AK
authors.lastname: Saxena
authors.forename: Vinayak
authors.initials: V
authors.lastname: Mittal
authors.forename: Kushaljit S
authors.initials: KS
authors.lastname: Sodhi
mesh_terms: D001982:Bronchial Diseases / Q000000981:diagnostic imaging*; D055745:Bronchioles; D006801:Humans; D014057:Tomography, X-Ray Computed