Primary suprasellar germ cell tumor in a dog

Area of Science:

• Veterinary Neurology
• Comparative Pathology
• Canine Oncology

Background:

• Progressive central nervous system (CNS) depression and apparent blindness are significant clinical signs in dogs.
• Hypercholesterolemia and bradycardia can be associated with various systemic and neurological conditions.

Observation:

• A 5-year-old female Rottweiler presented with neurological deficits including apparent blindness and CNS depression.
• Clinical examination revealed retinal degeneration and cranial nerve deficits.
• Significant hypercholesterolemia and bradycardia were noted.

Findings:

• Necropsy identified a 3-cm soft, tan mass on the ventral surface of the rostral brain, involving the hypophysis and sella turcica.
• Histologic examination revealed a solitary tumor composed of three distinct cell types.
• The tumor's location and histological characteristics were consistent with a primary intracranial germ cell tumor.

Implications:

• This case highlights the importance of considering primary intracranial germ cell tumors in canine neurological presentations.
• The findings contribute to the understanding of rare brain tumors in domestic animals.
• Further research into the etiology and treatment of canine intracranial germ cell tumors is warranted.