Sellar contour: anatomic-polytomographic correlation.

Focal contour c hanges of the se ll a have been interpreted by several authors to represent underlying pituitary microadenomas [1 -4). These changes are often only recognized by thin section tomography. However, norm al va ri ations in the sellar contour may simulate pathologi c alteration s [5). Due to the high inc idence of incidental pituitary microadenomas in ihe general populati on [6] , c lear guidelines for the evaluation of minimal sellar contour changes have not been establi shed . To allevi ate thi s, an anatomi c stud y was performed to correlate the hi stologic appearance of the pituitary g land w ith the tomog raphic con tour of the sella.