The type of tumor and where it is in the brain.

About 2 people per million develop this type of tumor.

"We have to treat patients according to their tumor type."

But the type of tumor he had is almost always fatal, they said.

Surgery success rates are very high with this type of tumor.

Treatment of these tumor types will be surgery whenever possible.

This tumor type is also known to arise in young dogs.

The options also depend on the type of tumor and where it is.

Sometimes a biopsy is required to find out the type of tumor.

Although not common, this type of tumor can become malignant.