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  • 1 Fromt the Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996.

A 6-year-old 17.5-kg (38.5-lb) castrated male Labrador Retriever that lived on a farm and had free access to livestock was referred for a 2-month history of progressive coughing and respiratory distress. Approximately 1 month earlier, the dog was evaluated by the referring veterinarian because of dyspnea after unwitnessed trauma. Thoracic radiography performed by the referring veterinarian at that point revealed recent fractures of the bodies of the right sixth through ninth ribs, pulmonary contusion, and a redundant tracheal membrane spanning the thoracic inlet (not shown). Although the dog seemed to recover from the traumatic event, the dog's respiratory distress

Supplementary Materials

    • Supplementary Figure S1 (PDF 438 KB)

Contributor Notes

Dr. Helgert's present address is the Breathitt Veterinary Center, Murray State University, Hopkinsville, KY 42240.

Address correspondence to Dr. Whittemore (jwhittemore@utk.edu).