title: Metastasizing Esthesioneuroblastoma in a Dog.
abstract: A 7-year-old Afghan hound presented with a history of disorientation, loss of vision, and seizures. Magnetic resonance imaging helped identify a mass at the level of the main olfactory bulb that compressed and displaced adjacent tissues in the cribriform plate into the nasal cavity and nasopharynx. Bony structures were osteolytic. After removing almost 80% of the mass, the tumor recurred a few months later. Due to severe respiratory distress and subsequent to an ultrasound diagnosis of a liver tumor, the dog was euthanized. In addition to the nasal mass, a single nodule in the liver and multiple nodules in the lung were present. All masses had similar cell morphology and were diagnosed as metastasizing esthesioneuroblastoma. The neoplastic cells expressed neuron-specific enolase and chromogranin A, and a few cells within the nasal mass were positive for cytokeratin. This is the first description of a canine esthesioneuroblastoma with distant metastases.
authors.affiliation: Institut für Veterinär-Pathologie, Universität Gießen, Germany Krystyna.Siudak@vetmed.uni-giessen.de.
authors.forename: K
authors.initials: K
authors.lastname: Siudak
authors.affiliation: Klinik für Kleintiere, Chirurgie, Universität Gießen, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Klingler
authors.affiliation: Klinik für Kleintiere, Chirurgie, Universität Gießen, Germany.
authors.forename: M J
authors.initials: MJ
authors.lastname: Schmidt
authors.affiliation: Institut für Veterinär-Pathologie, Universität Gießen, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Herden
mesh_terms: D000818:Animals; D054022:Cerebrum / Q000473:pathology; D053379:Chromogranin A / Q000378:metabolism; D004283:Dog Diseases / Q000378:metabolism / Q000473:pathology*; D004285:Dogs; D018304:Esthesioneuroblastoma, Olfactory / Q000473:pathology / Q000556:secondary / Q000662:veterinary*; D007633:Keratins / Q000378:metabolism; D008099:Liver / Q000473:pathology; D008113:Liver Neoplasms / Q000473:pathology / Q000556:secondary / Q000662:veterinary*; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000473:pathology / Q000556:secondary / Q000662:veterinary*; D008297:Male; D009296:Nasal Cavity / Q000473:pathology*; D009364:Neoplasm Recurrence, Local; D009669:Nose Neoplasms / Q000473:pathology / Q000662:veterinary*; D010751:Phosphopyruvate Hydratase / Q000378:metabolism
chemical_list: D053379:Chromogranin A; D007633:Keratins; D010751:Phosphopyruvate Hydratase
keywords: esthesioneuroblastoma; immunohistochemistry; metastasis dog; olfactory neuroblastoma