• Open Access

Ultrasound-Guided Fine-Needle Aspiration of Focal Parenchymal Lesions of the Lung in Dogs and Cats

Authors

  • Emilia F. Wood,

    1. Departments of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, W1
    Search for more papers by this author
  • Robert T. O'Brien,

    Corresponding author
    1. Departments of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, W1
      Clinical Associate Professor, University of Wisconsin School of Veterinary Medicine, 2015 Linden Drive West, Madison, WI 53706; e-mail: obrienr@svm.vetmed.wise.edu.
    Search for more papers by this author
  • Karen M. Young

    1. Departments of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, W1
    Search for more papers by this author

Clinical Associate Professor, University of Wisconsin School of Veterinary Medicine, 2015 Linden Drive West, Madison, WI 53706; e-mail: obrienr@svm.vetmed.wise.edu.

Abstract

Ultrasound-guided fine-needle aspiration (FNA) of the lung was performed on 16 dogs and 3 cats with consolidated pulmonary lesions or masses identified on thoracic radiographs. The cytologic results from the FNA were confirmed by histopathology, response to treatment, or microscopic identification of Blastomyces organisms. Neoplasia was identified correctly by FNA cytology in 10 of 11 animals, and no false positive results occurred, yielding a positive predictive value of 100%. Of 8 animals with infectious disease, 5 of 6 had blastomycosis and 1 had a bacterial infection, based on cytologic evaluation. Eight animals required sedation for the procedure, and none had clinical complications. We conclude that ultrasound-guided FNA of pulmonary mass lesions is an inexpensive, safe, and accurate method for diagnosing blastomycosis or neoplasia, especially carcinomas, in dogs and cats.

Ancillary