Harvey's Place

This information is provided by Lap of Love Veterinary Hospice

What is it?
Cancer affecting the brain is common in older dogs and cats and can rarely be seen
in younger animals. Tumors can arise primarily from the brain or can be caused
by spread of tumors located elsewhere in the body. The most common form of
primary brain tumors in dogs and cats are known as meningiomas, originating from
the membrane that covers the brain (meninges). This tumor type is usually slowgrowing
and amenable to treatment. Other types of tumors include gliomas, choroid
plexus adenomas, pituitary adenomas or adenocarcinomas, and others. Most animals
present to their veterinarian for seizures or behavioral changes, such as loss of learned
behavior or depression. Diagnosis is determined by a complete physical, neurological
examination, and/or advanced imaging (MRI or CT).

How is it treated?
The options for treating brain tumors include surgical removal, radiation therapy,
chemotherapy, and palliative treatment of the symptoms.

What is the prognosis for a brain tumor?
It is important to note that most brain tumors are treatable, but not curable. The
mean survival time for pets with untreated brain tumors is relatively short. Dogs have
an excellent prognosis following complete excision of solitary cerebral meningiomas.
Radiation therapy is associated with a better prognosis than surgery alone or
conservative management. Brain tumors that are not treated or that are aggressive
will result in progressive disease. A personalized treatment plan is important to slow
the progression of cancer. Talk to your veterinarian regarding the best treatment
protocol for your pet.