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Case Report |
From the Departments of Small Animal Clinical Sciences (Hill, Thompson, Seguin, Miller) and Infectious Diseases and Pathology (Ginn, Taylor), College of Veterinary Medicine, University of Florida, 2015 SW 16th Avenue, Gainesville, Florida 32610.
An endobronchial polyp was visible radiographically and bronchoscopically in an 11-year-old, mixed-breed dog with a persistent cough. The polyp was removed by traction. Initial histological examination suggested it was a myxomatous fibroma. The cough resolved but recurred with polyp regrowth. Two additional lung masses became visible radiographically. The polyp was removed twice more at 6-month intervals. Euthanasia was performed 15 months after first presentation when coughing recurred soon after the final bronchoscopy. Histological examination revealed that the mass was a myxomatous sarcoma. The lung contained two other unrelated tumors: a bronchioloalveolar carcinoma and a carcinoma of unknown origin.
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