Endoscopic treatment of an intrathoracic tracheal osteochondroma in a dog

• Melissa M. Hawley ^[1] ; Lynelle R. Johnson ^[2] ; Brian G. Murphy ^[3] ; Eric G. Johnson ^[4] ; Peter J. Pascoe ^[4]
  1. [1] Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California-Davis
  2. [2] Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis
  3. [3] Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California-Davis
  4. [4] Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis

  Mostrar afiliaciones +
• Localización: JAVMA: Journal of the American Veterinary Medical Association, ISSN-e 0003-1488, Vol. 247, Nº. 11, 2015, págs. 1303-1308
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Case Description—A 1.5-year-old spayed female Bernese Mountain Dog was examined for a 6-month history of intermittent vomiting, regurgitation, wheezing, and coughing. Initially, a diagnosis of gastroesophageal reflux disease with secondary aspiration pneumonitis was made but clinical signs did not resolve with treatment.

    Clinical Findings—Thoracic and cervical radiography and CT revealed a sessile, irregularly marginated soft tissue opacity at the level of the fourth rib. Results of a CBC, serum biochemical analysis, and urinalysis were within reference limits. Results of abdominal ultrasonography were normal.

    Treatment and Outcome—Tracheoscopy revealed a firm, irregularly marginated mass apparently originating from the ventral aspect of the trachea, occluding approximately one-half of the tracheal lumen, and located 2 cm cranial to the carina. Cytologic and histopathologic examination of fine-needle aspirate and biopsy samples suggested a benign etiology; therefore, endoscopic minimally invasive laser and electrocautery resection of the mass was scheduled. A total IV anesthetic protocol was administered with an oxygen-air mixture used to decrease the risk of fire during tracheal surgery. The mass was successfully resected, and histopathologic examination confirmed a diagnosis of osteochondroma. Clinical signs resolved, and at follow-up 32 months later, no regrowth of the mass was evident.

    Clinical Relevance—Tracheoscopy-guided electrocautery and surgical diode laser resection was successful in removing an obstructive tracheal mass that was not resectable by means of a conventional open surgical approach. Minimally invasive procedures may decrease morbidity and mortality and improve outcome in appropriately selected small animal patients.