Naturally occurring nasal obstructions in 11 sheep.
Eleven adult sheep of various breeds were examined due to inspiratory dyspnea. Fiberoptic examinations conducted in 8 of the sheep revealed masses to be obstructing the nasal passages. Identification of the masses through histopathologic examination showed 7 to be adenocarcinomas, 1 a papillary adenoma, and 4 were cases of glandular hyperplasia with lymphoplasmacytic infiltration (nasal polyps). One ewe had both an adenocarcinoma and a polyp. Surgical removal of the masses was attempted on 6 of the sheep. Four of the 6 surgically-treated sheep have survived between 2 mo. - 2 years without recurrence of the obstruction.
D000230:Adenocarcinoma / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D000402:Airway Obstruction / Q000209:etiology / Q000662:veterinary*; D000818:Animals; D001049:Apnea / Q000209:etiology / Q000662:veterinary*; D009298:Nasal Polyps / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D009669:Nose Neoplasms / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000209:etiology* / Q000473:pathology