### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, I am a 52 year old male who was diagnosed with cebellar ataxia within the last 3 years. I have had similar problems dating back to 2007 . At that time saw a neurologist and after 3 years of tests and pokes the only conclusion was it might be the stat of MS or Cancer. Well, Cancer did come a calling two years later in the form of colon cancer. I did not go back to a neurologist until 3 years ago complaining of balance and speech issues along with eyes twitching. She did multiple test including MRI of the brain that showed my cerebellum only 1/3 the size it should be. My two questions are: my neurologist feels my cerebellum caused my cancer and can cause cancer again. Is this true? And how? My oncologist agrees with my neurologist. Also what is the life expectancy of someone my age with this disease? We do not know why my cerebellum is shrinking because I do not drink or have never had a stroke and no family history of this.

### output:

Hello, I am afraid I don't agree with what you have been told. Cerebellar atrophy doesn't cause cancer. Cerebellar atrophy can't even be called a condition, it is simply a descriptive Latin term meaning shrinking of the little brain, doesn't indicate the origin, may be in the setting of different causes with different mechanisms.  I think what the doctors must have meant is the other way round, that it is the colon cancer which has caused the cerebellar atrophy. It is known for cancer to cause Paraneoplastic syn Chat Doctor.  Cerebellar atrophy or degeneration is a well-known neurological paraneoplastic syn