inferior sagittal sinus

(redirected from longitudinal sinus)

in·fe·ri·or sag·it·tal si·nus

[TA]
an unpaired dural venous sinus in the lower margin of the falx cerebri, running parallel to the superior sagittal sinus and merging with the great cerebral vein to form the straight sinus.

inferior sagittal sinus

one of the six venous channels of the posterior dura mater, draining blood from the brain into the internal jugular vein. It receives deoxygenated blood from several veins from the falx cerebri and, in some individuals, from a few veins from the cerebral hemispheres. Compare straight sinus, superior sagittal sinus, transverse sinus.

in·fe·ri·or sag·it·tal si·nus

(ISS) (in-fērē-ŏr saji-tăl sīnŭs) [TA]
Unpaired dural venous sinus in the lower margin of the falx cerebri, running parallel to the superior sagittal sinus and merging with the great cerebral vein to form the straight sinus.
Synonym(s): sinus sagittalis inferior [TA] , inferior longitudinal sinus.

inferior sagittal sinus

An unpaired midline dural sinus running along the lower, free margin of the falx cerebri (over the top of the corpus callosum). It drains blood from veins in the falx and from the medial surfaces of the hemispheres, and it empties, posteriorly, into the straight sinus.
See also: sinus
References in periodicals archive ?
Injury to the longitudinal sinus accompanying a depressed fracture of the skull.
4 Among the aetiological factors associated with IIH, lateral or superior longitudinal sinus thrombosis, menstrual irregularities with obesity, obstructive sleep apnoea, endocrine disorders, including adrenal insufficiency, hyper-adrenalism, and corticosteroid hormone withdrawal, hyperparathyroidism, hypothyroidism, pregnancy, menarche, lupus, intoxication with vitamin A or chlordecone, tetracycline therapy, spinal cord tumours, and the Guillain-BarrACopyright syndrome (GBS) are the most known factors.
Brain CT and RMI revealed extraxial lesion, located in the left frontoparietal zone, parasagittal to the longitudinal sinus, isointense on T1-weighted with heterogeneous gadolinium enhanced.

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