Petrosquamous sinus explained

Petrosquamous sinus
Latin:	sinus petrosquamosus

The petrosquamous sinus is a fetal vein that generally disappears by birth^[1] and, when present, runs backward along the junction of the squama and petrous portion of the temporal, and opens into the transverse sinus.

Notes and References

1. The Petrosquamosal Sinus: CT and MR Findings of a Rare Emissary Vein. American Journal of Neuroradiology. June 2001. 22. 6. 1186–1193. Marsot-Dupuch. K.. Gayet-Delacroix. M.. Elmaleh-Bergès. M.. Bonneville. F.. Lasjaunias. P.. 11415917. 7974791.