Congenital bilateral perisylvian syndrome: MR findings

The insula of Reil is seen on every MR imaging study of the brain. It is interesting to be familiar with the insular anatomy, as the insula is often involved in brain pathology and it is a location in the brain with multiple vital functions, such as gustatory sensation, motor planning of speech, vestibular function, and cardiovascular para/orthosympathetic balance. We describe the anatomy of the insula and correlate the anatomy on MR imaging obtained at 1.5T. We illustrate the clinical importance of the insula by a case report.