Mucocele of the sphenoid sinus. A benign imitator.

IN recent years, considerable interest has developed in the phenomenon of sphenoid sinus mucocele (Lundgren and Olin, 1961). Important factors are the critical location of this sinus and the various vital structures which may be involved by an essentially benign pathological process originating within its boundaries. We have recently treated a patient in whom the pre-operative diagnosis was that of a malignant parasellar intracranial process, and who has shown good response to simple drainage of the surgically diagnosed mucocele.