Microprolactinoma Invading the Cavernous Sinus —Report of Three Cases—

Abstract

Three cases of microprolactinoma with cavernous sinus invasion on magnetic resonance imaging are reported. High-resolution computed tomographic scans did not demonstrate the cavernous sinus involvement. Magnetic resonance imaging is indispensable to detect cavernous sinus invasion before treatment (transsphenoidal surgery or bromocriptine treatment) of a microprolactinoma.