Occult temporal lobe encephalocoele into the transverse sinus.

In this article we present a case of an incidental encephalocoele protruding through a dural defect into the transverse sinus. Encephalocoeles are usually described as a herniation of the meninges and brain parenchyma through a bony defect of the cranium or base of skull. To our knowledge, there are only a few patients reported in the literature of occult encephalocoeles through dural defects. Our case study highlights that encephalocoele should be a differential diagnosis for a filling defect in this location.