However, the MR venogram showed occlusion of superior sagittal sinus, straight sinus, and bilateral transverse sinus
[Figure 1]b and [Figure 1]c.
thrombosis after internal jugular vein ligation.
MRV shows non opacification of the left transverse sinus
with contrast due to underline deep venous sinus thrombosis (Figure 3).
The origination of this hematoma occurs either from the traumatic injury to temporal lobes resulting in middle meningeal artery braches laceration or tear or fracture of occipital bones with secondary injury to transverse sinus
In group 1, localizations of CVT were superior sagittal sinus (n=2), superior sagittal sinus and transverse sinus
(n=1), superior sagittal sinus and transverse sinus
and sigmoid sinus (n=1), only transverse sinus
(n=11), transverse sinus
and sigmoid sinus (n=2), transverse sinus
and inferior sagittal sinus (n=1), and only sigmoid sinus (n=3).
amp;nbsp;Three out of every one million people will develop CVST, which is when a blood clot forms in the transverse sinus
- a large vein that wraps around the inner wall of the skull.
Thrombosis was found in the transverse sinus
in two patients.
Magnetic resonance venography (MRV) demonstrated right sigmoid and transverse sinus
thrombosis, right proximal internal jugular vein thrombosis, and bilateral cavernous sinus thrombosis (figure 2).
The thrombosed (hyperdense) right transverse sinus
was misinterpreted as a subdural hematoma.
Under aseptic conditions, midline marked, question mark incision started at zygoma, with posterior extent 2-3 cm posterior to standard trauma flap taking care of transverse sinus
Digital subtraction angiography (DSA) venous phase also revealed 50% stenosis of transverse sinus
, 50% stenosis of left proximal sigmoid sinus and 90% stenosis of its distal part leading to obstruction of left transverse sinus
outflow and forced directed drainage of left hemisphere to the anterior region.
MR venogram of brain showed right sided thrombosis of sigmoid and transverse sinus