Abstract

The dural venous sinuses are venous channels in the cranium that drain blood and cerebrospinal fluid circulating from the brain into the vascular system via the internal jugular veins. The transverse sinus is a dural venous sinus present in the posterior aspect of the cranium. We report an unusual variant of this sinus with the presence of a fenestration at its proximal segment. We will review and discuss the background and the potential clinical relevance of this anatomical variation.

KEYWORDS:

anatomy; dural venous sinuses; fenestration; transverse sinus; variation

Figure 1

Left: transverse sinus with proximal fenestration (short arrows); Middle: widening of fenestration (arrows) with scissors; Right: Following removal/retraction of blue latex from within the left transverse sinus, note the intraluminal dural septation.

Guest UserAugust 5, 2020anatomy; dural venous sinuses; fenestration; transverse sinus; variationComment