• Open Access

Carotid Body Tumors in the Dog Eleven Cases (1978–1988)

Authors

  • Joyce E. Obradovich DVM,

    1. Comparative Oncology Unit, Department of Clinical Sciences
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  • Stephen J. Withrow DVM,

    Corresponding author
    1. Comparative Oncology Unit, Department of Clinical Sciences
      Colorado State University, Comparative Oncology Unit, Veterinary Teaching Hospital, 300 W. Drake Road, Fort Collins, CO 80523
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  • Barbara E. Powers DVM, PhD,

    1. Radiology and Radiation Biology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado
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  • Richard Walshaw BVSc

    1. Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan.
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Colorado State University, Comparative Oncology Unit, Veterinary Teaching Hospital, 300 W. Drake Road, Fort Collins, CO 80523

Abstract

Case records of 11 dogs with histologically confirmed carotid body tumors were reviewed. Surgical excision had been attempted in ten dogs with carotid body tumors, and one dog had been euthanatized at diagnosis. There were no intraoperative deaths but perioperative mortality was 40%. Horner's syndrome and laryngeal paralysis were the most common postoperative morbidities. The median survival time after surgery alone in the four dogs that survived the perioperative period was 25.5 months (range, 12–45 months). Two dogs treated with postoperative radiation therapy had survival times of 6 and 27 months. Of the six dogs surviving the perioperative period, two dogs are still alive at 19 and 32 months postopera-tively. Of the four dogs that died, one was euthanatized 12 months postoperatively for nontumor-related causes. The remaining three dogs died of distant metastases. The carotid body tumors studied were characterized by local tissue invasion, neurovascular complications after therapy, and a propensity to metastasize to multiple sites in the body.

Ancillary