Overview of Dog Brain Cancer:
Brain tumor are common and often seen in middle age and older dogs however they can also affect the younger one too. If canine has a seizure then it could be the signs that a brain tumor is present.
The most common types that often found in dogs are astrocytomas, oligodendrogliomas and meningiomas. Tumor tend to be wide spread on multiple sites on the brain rather than one spotted position.
Some of the tumor arise directly from the brain tissue while other types spread to the brain by bloodstream since the brain control extensive blood supply.
The severity depend mainly on the brain location where the tumor arise and how fast they grow. Canine seizures can also be caused by other problems such as low blood sugar level or heart problems.
Causes of Brain Tumor in Dogs :
As with other forms of cancer, the exact cause of brain tumors in dogs is not known. In humans, brain tumors are thought to be caused by such things as genetics, exposure to radiation, nitrosamines from processed meats, electromagnetic fields, immunological issues, traumatic head injuries, solvents, and pesticides. It is not known if these same factors can cause brain tumors in dogs or not.
Brain tumors do appear to be more common in dogs than in many other kinds of domestic animals. Dogs that are over five years of age seem to be most at risk. Some breeds of dogs are more susceptible to brain tumors than others, such as Boston Terriers, Bulldogs, and Boxers. These are short-nosed or brachycephalic breeds and they seem predisposed to having tumors affecting the pituitary gland. Golden Retrievers, Collies, and other dolichocephalic (long-nosed) breeds may also be predisposed to having brain tumors, particularly meningiomas. Most mengiomas occur in dogs that are over seven years of age.
Symptoms of Dog Brain Cancer:
The most common symptom of a brain tumor is the onset of seizures, especially if the seizures start after the dog is five years old or older. Other symptoms include the dog exhibiting abnormal behavior and forgetting things; extreme sensitivity to touch or pain around the neck; problems with the dog’s vision, especially if the dog begins walking in circles or showing uncoordinated movements. Some dogs have a staggering walk that is a tell-tale sign. Some dogs may develop aggression or behave like puppies. In some cases dogs may develop obsessions. More Symptoms :
- behavior change
- compulsive walking
- walk in circle
- loss of habits that have been trained before
- facial paralysis often cause by tumor in the lower part of the brain (brainstem)
- lower intelligence
- partial or fully blindness indicated that there is a tumor in optic nerve or hypothalamus
- low energy level
- decreased activities
- seizures often cause by tumor in the cerebral cortex
- wobbliness and tremors indicated that there is a tumor in the cerebellum region of the brain that play an important role in the integration of sensory perception
- loss the sense of smell often cause by tumor in the sensory system used for olfaction (olfactory system)
Because of slow growing rate of tumor inside the brain dogs can carry brain tumors for a few years before they start to show signs and symptoms, so its wise that the owner gets his/her dog checked by a veterinarian if he/she noticed any kind of above symptoms.
Treatment of Dog Brain Cancer:
There are three primary care methods for dogs and cats that have been diagnosed with brain tumors: surgery, radiation therapy, and chemotherapy. The major objectives with these therapies are to eradicate the tumor or reduce its size, and to control secondary effects, such as fluid build-up in the brain (known as cerebral edema) that may result from a brain tumor. Surgery may be used to completely or partially remove tumors, while radiation therapy and chemotherapy may help shrink tumors. Various medications can be prescribed to slow tumor growth and to cope with side-effects, such as seizures. A course of radiation therapy will usually cost from $3,000 to $4,000, according to the North Carolina State College of Veterinary Medicine. Chemotherapy is not used very often to treat canine brain cancer, so the data on this treatment is limited.
Breeds that are prone to brain tumor :
- boston terriers
- golden retrievers
- doberman pinschers
- scottish terriers
- old english sheepdogs
Living and Management :
It will be necessary for your veterinarian to monitor your dog regularly with different scans such as CT scans (computed tomography, CAT scans (computerized axial tomography, and MRI scans (magnetic resonance imaging). This will help your vet
examine your dog’s nervous system and look for any complications from the treatments.
The prognosis for dogs with a brain tumor will depend on what kind of tumor the dog has, where it is located, the size of the tumor, and how early it was caught.