Sylvian lipoma causing auditory hallucinations: case report.

A sylvian fissure lipoma that caused auditory hallucinations, frequent olfactory auras, and occasional visual hallucinations is reported. The patient had been diagnosed as suffering from a functional psychosis for more than a decade, with symptoms severe enough to warrant frequent psychiatric attention, including institutional care. The computed tomographic findings are discussed. The literature is reviewed and therapeutic options are proposed.