An MRI revealed left transverse sinus, sigmoid sinus, and jugular bulb thrombosis with a left temporal lobe venous infarct (Fig 1).

The sigmoid sinus starts just below the temporal bone on the sides of the head and follows a complex course to the jugular foramen, a hole in the bone at the base of the skull.

Cerebral Venous Thrombosis. Magnetic Resonance Venogram (MRV). Note the absence of the left transverse sinus and sigmoid sinus, as well as the complete absence of the left internal jugular vein.

MRV - Lateral View. MRV is used to evaluate for cerebral sinus thrombosis, which typically occurs in hypercoaguable states, including late in pregnancy and following delivery. In the lateral view, the ...

This is the solution to a case we presented recently. For complete clinical details, you may want to review the case. The patient was a 6-year-old girl who returned to the emergency department ...