The Use of Coronal Sections in Evaluating Lesions of the Sellar and Parasellar Regions

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Abstract
Computed tomography is presented in 9 cases from a series of 12 which illustrates the value of coronal sections in delineating the borders and origins of extraaxial sellar and parasellar masses. In this projection, the presence or absence of suprasellar extension is demonstrated, and 2 important signs are discussed. A rim of cisternal CSF termed the cap is seen over the superior border of masses extending into the suprasellar region defining their extraaxial location. The broad base of a lesion defines its origin. The limitations of the method are also discussed.