Abstract
We report clinical and pathological features of enzootic nasal adenocarcinoma in one sheep in Algeria. A one-year-old Ouled Djellal sheep from a large herd (~1240 animals), located in Bordj Bou Arreridj, Algeria, was clinically diagnosed by the presence of persistent seromucous nasal discharge, head shaking, muzzle licking, dyspnoea, exophthalmia and frontal protrusion. The sheep was euthanized, and the necropsy was performed. Gross examination showed soft touch, pinkish-white tumour masses in the nasal cavities with distortion of the turbinates and of the medium septum. According to clinical and pathological findings, the tumour has been defined as a low grade mixed nasal adenocarcinoma, with the presence of tubular and papillary structures. This is, to our knowledge, the first report in Algeria of nasal adenocarcinoma known to be associated with ENTV (Enzootic Nasal Tumor Virus) infection. However, such association requires confirmation by direct and/or indirect viral investigation.

Key words: Enzootic nasal adenocarcinoma, Ouled Djella sheep, Algeria