superior sagittal sinus

(redirected from Superior sagittal)

su·pe·ri·or sag·it·tal si·nus

[TA]
an unpaired dural venous sinus in the sagittal groove, beginning at the foramen caecum and terminating at the confluence of sinuses where it merges with the straight sinus; receives the superior cerebral veins and has lateral extensions, the lateral venous lacunae.

superior sagittal sinus

one of the six venous channels in the posterior of the dura mater that drains blood from the brain into the internal jugular vein. It has no valves. The superior sagittal sinus receives the superior cerebral veins, veins from the diploë and near the posterior extremity of the sagittal suture, the anastomosing emissary veins from the pericranium, and the veins from the dura mater. It also anastomoses with veins of the nose, the scalp, and the diploë. Compare inferior sagittal sinus, straight sinus, transverse sinus.

su·pe·ri·or sag·it·tal si·nus

(sŭ-pēr'ē-ŏr saj'i-tăl sī'nŭs) [TA]
An unpaired dural venous sinus in the sagittal groove, beginning at the foramen caecum and terminating at the confluence of sinuses where it merges with the straight sinus; receives the superior cerebral veins and has lateral extensions, the lateral venous lacunae.

superior sagittal sinus

A long unpaired midline channel through the superior margin of the falx cerebri. It begins in the front near the crista galli of the ethmoid bone, and it extends along the entire inner roof of the skull to the internal occipital protuberance in the back. Its posterior end, called the confluence of the sinuses, is dilated and usually joins the right transverse sinus; however, the other transverse sinus and the occipital sinus also communicate with the confluence of the sinuses. Tributaries of the superior sagittal sinus include ascending frontal cerebral veins, superior cerebral veins, diploic veins draining the skull bones, and a number of irregularly shaped venous lacunae. Numerous arachnoid granulations (sites of the return of water and filtrate from the cerebrospinal fluid) protrude into the superior sagittal sinus.
See also: sinus
References in periodicals archive ?
However, the MR venogram showed occlusion of superior sagittal sinus, straight sinus, and bilateral transverse sinus [Figure 1]b and [Figure 1]c.
The location of brain tumours was studied in relation to these craniometric points and other structures including sylvian fissure, coronal suture, motor strip, superior sagittal sinus, transverse sinus, top of the pinna and external auditory canalin all planes (coronal, sagittal and axial).
CTA of brain vessels performed on the next day showed on the front left side of the brain a dilated vein that continued to the prominent cortical vein, which was further drained into the superior sagittal sinus.
A rare case of superior sagittal sinus thrombosis has been reported in association with Evans syndrome of hemolytic anemia, [7] but as far as we know the association of cerebral vein thrombosis with TTP is extremely rare.
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).
Superficial cortical veins drain into superior sagittal sinus against the blood flow in sinus, thus causing turbulation in the blood stream that is further aggravated by the presence of fibrous septa present at inferior angle of the sinus.
They address the common presentations, subtypes, biomechanics, and outcomes of abusive head trauma, then common presentations, treatment, diagnostic significance, and related conditions of specific medical mimics: birth trauma, congenital malformations, benign extra axial fluid of infancy, genetic and metabolic disorders, hematological diseases and disorders of coagulation and clotting, autoimmune and vasculitic conditions, medical and surgical complications with intracranial hemorrhages, infectious diseases, oncologic mimics, superior sagittal sinus thrombosis, toxins, poisons, nutritional deficiencies, short falls, motor vehicle collisions, and mimics of abusive fractures.
2) LPM usually occurs in young and middle age patients, with most common locations being cerebral convexities, skull base, parasagittal area within the superior sagittal sinus, cervical canal, optic nerve and tentorium.
1) The vertex and posterior fossa are locations where the superior sagittal, transverse and sigmoid sinuses reside, but are frequently obscured from beam hardening on noncontrast CT, contributing to the decreased reliability of the hyperdense sinus sign.
Erosions of both anterior and posterior tables of the right frontal sinus were evident with communication of the secretive material both externally with the soft tissues, and internally with the superior sagittal sinus (Figure 1).
Noninvasix's optoacoustic sensor uses direct, real-time monitoring of cerebral venous oxygenation in the human superior sagittal sinus to determine welfare.

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