transverse sinus


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trans·verse si·nus

[TA]
a paired dural venous sinus that drains the confluence of sinuses, running along the occipital attachment of the tentorium cerebelli and terminating in the sigmoid sinus.
Synonym(s): sinus transversus [TA], lateral sinus

trans·verse si·nus

(trans-vĕrs' sī'nŭs) [TA]
A paired dural venous sinus that drains the confluence of sinuses, running along the occipital attachment of the tentorium cerebelli and terminating in the sigmoid sinus.

transverse sinus

A dural sinus in the lateral edge of the tentorium cerebelli along each lateral upper border of the posterior cranial fossa. One transverse sinus (usually the right) is a continuation of the superior sagittal sinus; the other transverse sinus (typically the smaller of the two) is the continuation of the inferior sagittal sinus, although both transverse sinuses usually have a connection near their origin, in the region of the confluence of sinuses. The transverse sinuses run anteriorly and turn downward to become the sigmoid sinuses at the front edges of the tentorium cerebelli; at this point, the transverse sinuses are joined by the superior petrosal sinuses. Tributaries of the transverse sinuses include inferior cerebral, inferior cerebellar, and diploic veins.
See also: sinus
References in periodicals archive ?
(26) demonstrated the presence of bilateral transverse sinus stenosis with a sensitivity and specificity of 93% in patients with IIH using MRV In one study, according to the definition of transverse venous sinus stenosis, it was reported that 100% of the patients with IIH had bilateral stenosis on MRV (29).
A total of 25 bodies were studied (50 sides).In midline just adjacent to the torcula the upper part of the transverse sinus was found at an average of 13.4 mm (Median 13.4, range 1214.8) above the IZ line on right side and an average of 12.5 mm (Median 12.7, range 11.2-13.4) above the same on left side.
B) The location of the skull defect and the bulging transverse sinus (arrow); b, C) the tumor was resected, and some scalp was retained to cover the wound, similar to a flap.
Saindane et al., "Clinical course of idiopathic intracranial hypertension with transverse sinus stenosis," Neurology, vol.
"In the course of a routine follow-up MRI on Sunday, the scan revealed that a right transverse sinus venous thrombosis had formed.
A routine scan revealed "that a right transverse sinus venous thrombosis had formed," doctors Lisa Bardack, of Mount Kisco Medical Group and Gigi El-Bayoumi, of George Washington University, said.
A routine follow-up scan on Sunday revealed "that a right transverse sinus venous thrombosis had formed," doctors Lisa Bardack, of Mount Kisco Medical Group, and Gigi El-Bayoumi, of George Washington University, said.
Cerebral artery MR angiography, bilateral carotis arteries, anterior cerebral artery, pericallosal artery and mid cerebral artery, Willis Polygon arterial structures, basilar artery, and arteria cerebri posterior branches were normal; no aneurysm, malformation or displacement were detected; venous MR angiography revealed a slightly weakened right transverse sinus calibration (variation) and normal sagittal sinus, straight sinus, left transverse and sigmoid sinus alignments and calibrations.
The late venous phase showed persistent capillary blush, posterior third of sagittal sinus occlusion and poor filling of the bilateral transverse sinus. Superselective embolisations of the left occipital artery, superficial temporal artery and middle meningeal artery were taken with absorbable gelatin sponge particles.
In this case, both MRI and MRV revealed thrombosis of the superior saggital sinus and also the left transverse sinus. In addition, other findings were consistent with left parietal venous infarction.

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