Radiologic and pathologic features of bronchiolitis.
OBJECTIVE
The purpose of this article is to describe and illustrate the clinical, pathologic, and imaging features of the inflammatory and fibrotic forms of bronchiolitis. The CT features presented in this article represent the typical features associated with each entity.


CONCLUSIONS
Direct signs of bronchiolitis include centrilobular nodules and tree-in-bud pattern. Indirect signs include mosaic attenuation and air trapping. Although classic examples of each entity exist, there can be substantial overlap in the appearances, and distinguishing among these entities is not always possible. When high-resolution CT features overlap, clinical details will usually help to narrow the differential diagnosis.
Pipavath
Sudhakar J
SJ
Department of Radiology, University of Washington, Seattle, WA, USA.
Lynch
David A
DA
Cool
Carlyne
C
Brown
Kevin K
KK
Newell
John D
JD
D001988:Bronchiolitis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D001995:Bronchography; D005355:Fibrosis; D006801:Humans; D007249:Inflammation; D008168:Lung / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed