Primary meningioma of paranasal sinuses treated by the transbasal approach.

The authors found the transbasal approach very useful for the treatment of a meningioma originating in the paranasal sinus and massively involving the anterior cranial base. By this approach, both total excision of the tumor and reconstruction of the base of the skull were successfully achieved at the same operation. The usefulness of the transbasal approach as well as the clinicopathologic features of the meningiomas arising in the paranasal sinus are described.