Gastric gastrinoma in a dog: a case report, application of current <scp>WHO</scp> criteria for prognostication and validation of a local gastrin immunohistochemistry assay

Neuroendocrine neoplasms are rare in dogs. Gastrinoma has been reported in dogs however not in the stomach. This case report describes the presentation, emergency treatment, diagnostics, pathology, histochemical staining and recovery of a 7-year-old male entire pure-bred Pit bull terrier who had a neuroendocrine tumour resected. Immunohistochemistry confirmed the mass to be a gastrinoma with application of the current WHO criteria for classification of neuroendocrine neoplasms confirming this to be an intermediate grade tumour (NET G2).