Imaging the Sella and Parasellar Region

Diagnostic imaging evaluation of a pathologic process suspected to be located within the sellar and parasellar region requires much more than performing a routine CT or MR imaging examination of the brain. An intimate knowledge of the anatomy of the sellar and parasellar region is an essential prerequisite for imaging evaluation of this region. All neural components essential for vision and function of the eye and orbital structures converge in this region and contribute to the anatomic complexity. An understanding of the function of the cranial nerves related to vision and movement of the extraocular muscles aids in developing a more focused imaging examination of this region based on the provided clinical history. Furthermore, familiarity with the type and appearance of the pathologic processes that can be present at this location allows for a more precise and narrow differential diagnosis.