Is there anything that can cause a person to have hallucinations when they have a brain tumor?

Seizures: Depending on the location of the tumor, seizures can occur and can lead to altered perception of things--ie. Hallucinations. This may be described as auras, hearing things, smelling things. This occurs with tumors in the temporal lobe. Irritation of the brain may also lead to aberrant sensations that may be interpreted as hallucinations.For example, an occipital tumor may lead to visual symptoms.