title: Expiratory CT scan in patients with normal inspiratory CT scan: a finding of obliterative bronchiolitis and other causes of bronchiolar obstruction.
abstract: Expiratory CT scan is usually obtained as supplement to normal inspiratory CT scan to recognize air-trapping, which is expression of small airways obstruction. In some patients the air-trapping may be the only sign of an early-stage small airways disease in an otherwise normal lung.The purpose of this article is to illustrate pathologic conditions, namely obliterative bronchiolitis, in which expiratory CT scan can be abnormal despite normal inspiratory CT examination, and to highlight indications for this technique in patients with clinical and functional suspect of bronchiolar obstruction.
authors.affiliation: Department of Biomedical Sciences and of Morphological and Functional Images, University of Messina, Messina, Italy. fminutoli@unime.it.
authors.forename: Michele
authors.initials: M
authors.lastname: Gaeta
authors.forename: Fabio
authors.initials: F
authors.lastname: Minutoli
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Girbino
authors.forename: Alessandra
authors.initials: A
authors.lastname: Murabito
authors.forename: Caterina
authors.initials: C
authors.lastname: Benedetto
authors.forename: Rosario
authors.initials: R
authors.lastname: Contiguglia
authors.forename: Paolo
authors.initials: P
authors.lastname: Ruggeri
authors.forename: Salvatore
authors.initials: S
authors.lastname: Privitera