title: Endobronchial polyp derived from a myxosarcoma in the lung of a dog.
abstract: 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.
authors.affiliation: Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Avenue, Gainesville, Florida 32610, USA.
authors.forename: Richard C
authors.initials: RC
authors.lastname: Hill
authors.forename: Pamela E
authors.initials: PE
authors.lastname: Ginn
authors.forename: Margret S
authors.initials: MS
authors.lastname: Thompson
authors.forename: M Alexis
authors.initials: MA
authors.lastname: Seguin
authors.forename: Daphne
authors.initials: D
authors.lastname: Miller
authors.forename: David P
authors.initials: DP
authors.lastname: Taylor
mesh_terms: D000818:Animals; D001999:Bronchoscopy / Q000379:methods / Q000662:veterinary; D004283:Dog Diseases / Q000175:diagnosis* / Q000601:surgery; D004285:Dogs; D017809:Fatal Outcome; D008175:Lung Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D008297:Male; D009236:Myxosarcoma / Q000150:complications / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D009364:Neoplasm Recurrence, Local / Q000662:veterinary; D011127:Polyps / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery / Q000662:veterinary*; D013510:Pulmonary Surgical Procedures / Q000379:methods / Q000662:veterinary; D011859:Radiography