title: Radiography, computed tomography and virtual bronchoscopy in four dogs and two cats with lung lobe torsion.
abstract: This report describes the imaging features of radiography, computed tomography and virtual bronchoscopy in dogs and cats with lung lobe torsions. The medical records, thoracic radiographs and computed tomography images of four dogs and two cats with confirmed lung lobe torsions were retrospectively reviewed. Computed tomography with virtual bronchoscopy showed bronchial narrowing, collapse or occlusion in all six animals, while this was only appreciated on one radiographic examination. A tapering terminating angle of the air-filled bronchus proximal or distal to the collapsed region was seen only on computed tomography and virtual bronchoscopy in all six animals. The vesicular emphysema pattern typical of lung lobe torsion was seen on three computed tomographies but only on one radiographic examination. The lung lobe torsion-specific findings of vesicular emphysema and a proximally narrowed or occluded bronchus were more easily recognised on computed tomography and virtual bronchoscopy than with radiographs. Computed tomography slices acquired through the bronchus and lung lobe of interest in a cat or dog with possible lung lobe torsion can be reformatted into virtual bronchoscopic images that can be utilised along with computed tomography to help make a more definitive preoperative diagnosis.
authors.affiliation: Davis Veterinary Medical Teaching Hospital, Department of Surgical and Radiological Sciences, University of California, One Shields Avenue, Davis, CA 95616-8747, USA.
authors.forename: R M
authors.initials: RM
authors.lastname: Schultz
authors.forename: J
authors.initials: J
authors.lastname: Peters
authors.forename: A
authors.initials: A
authors.lastname: Zwingenberger
mesh_terms: D000818:Animals; D001999:Bronchoscopy / Q000662:veterinary; D002371:Cat Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002415:Cats; D004283:Dog Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004285:Dogs; D004646:Emphysema / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000662:veterinary; D005260:Female; D008171:Lung Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000662:veterinary*; D008297:Male; D013902:Radiography, Thoracic / Q000662:veterinary; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000662:veterinary; D014102:Torsion Abnormality / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000662:veterinary*