Brain Tumors Flashcards
Where would a primary brain tumor originate?
Nerve parenchyma
What is the most common primary brain tumors in dogs and cats?
Meningiomas and glial cell tumors
What are examples of intra-axial tumors?
Choroid plexus tumors and gliomas
What is the most common intracranial tumor in a horse?
Pituitary adenoma
What tumors seen in bovine can cause cerebellar syndrome?
Lymphosarcoma and medulloblastoma
If tumors affect the brain of food animals, what is the most common route of development?
Extraneural tumors invading neural parenchyma
In horses, what causes a cholesterinic granuloma?
Chronic hemorrhage causing deposits of RBCs and cholesterol
Where do cholesterinic granulomas most often form?
4th and lateral ventricles
What is a mainstay for any brain tumor treatment?
Steroids
Surgery is indicated for what location of brain tumors?
Extra-axial
What post-op therapy should be used for brain tumors?
Radiation therapy (most preferred)
What do meningiomas arise from?
Arachoid
What is the most common brain tumor seen in dogs and cats?
Meningioma
How is a meningioma described?
Primary, extra-axial
What other structure is usually associated with meningiomas?
Cysts
In which dog breeds are glial tumors (astrocytomas and oligodendrogliomas) most often seen?
Brachycephalic breeds (Boston terriers)
How are glial tumors described?
Intra-axial, primary, supratentorial
Which dog breed is significantly more likely to develop a choroid plexus tumor?
Golden retriever
How is a choroid plexus tumor described?
Primary intra-axial
Where are choroid plexus tumors most commonly found?
4th ventricle
Of the secondary tumors, which is the most common to affect the brain?
Hemangiosarcoma followed by lymphosarcoma
Which dog breed is overrepresented when it comes to central nervous system lymphoma?
Rottweilers
