“…Clinical signs include nasal discharge, epistaxis, facial deformity, and in some patients neurological abnormalities (predominantly seizures) due to extension into the cranium (MacEwen and others 1977, Norris 1979, Legendre and others 1983, Patnaik 1989, Smith and others 1989). The advent of computed tomography (CT) and magnetic resonance imaging (MRI) has provided more accurate assessment of tumour extent than radiography, which is of particular importance for the planning of radiotherapy (Thrall and others 1989, Park and others 1992, Petite and Dennis 2006, Avner and others 2008). With palliative hypofractionated megavoltage treatment of canine nasal tumours, a median survival time (MST) of seven months has been reported (Mellanby and others 2002).…”