Nasal neuroendocrine carcinoma in a dog

Abstract

History:
A 10-year-old male neutered Golden Retriever dog presented for seizures and a tendency for clockwise circling. A large extra-axial homogenously contrast-enhancing mass was seen with magnetic resonance imaging in the right frontal lobe/olfactory bulb area extending into the nasal cavity. A transfrontal craniotomy with debulking was performed with cytological touch impressions and biopsy. Acute-onset focal seizures and episodes of compulsive circling started around 1 month following surgery, with regrowth of the extra-axial mass with secondary perilesional edema on imaging. Euthanasia was elected.