sinus

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Related to Dural venous sinus: cavernous sinus, sinus durae matris

sinus,

cavity or hollow space in the body, usually filled with air or blood. In humans the paranasal sinuses, mucus-lined cavities in the bones of the face, are connected by passageways to the nose and probably help to warm and moisten inhaled air. When drainage from them is blocked, as after a cold, these sinuses often become infected, a condition called sinusitis. The accumulation of pus results in pressure, headaches, pain, and general discomfort. In invertebrates one of the spaces among the muscles and viscera through which blood returns to the heart is also known as a sinus.

sinus

(sÿ -nŭs) A semienclosed break along the borders of a lunar mare or in a scarp. The word is used in the approved name of such a feature on the Moon. (Latin: bay)

Sinus

 

in anatomy, a cavity, protrusion, or long closed channel. In vertebrates (including man), the term “sinus” refers to a channel filled with venous blood in the dura mater. The cavity in some cranial bones is also called a sinus. [23–1297–]

sinus

[′sī·nəs]
(biology)
A cavity, recess, or depression in an organ, tissue, or other part of an animal body.

sinus

1. Anatomy
a. any bodily cavity or hollow space
b. a large channel for venous blood, esp between the brain and the skull
c. any of the air cavities in the cranial bones
2. Pathol a passage leading to a cavity containing pus
3. Botany a small rounded notch between two lobes of a leaf, petal, etc.
4. an irregularly shaped cavity
References in periodicals archive ?
Chaudry, "Meta-analysis of csf diversion procedures and dural venous sinus stenting in the setting of medically refractory idiopathic intracranial hypertension," American Journal of Neuroradiology, vol.
Prevalence of traumatic dural venous sinus thrombosis in high-risk acute blunt head trauma patients evaluated with multidetector CT venography.
Dural venous sinus thrombosis is more common than cortical vein thrombosis and the dural sinuses may become occluded secondary to skull base infections, hyper coagulable states, dehydration and compression from meningiomas or other duraltumours.
With the advent of magnetic resonance (MR) venography and increased use of cerebral angiography, there has been recent emphasis on the significant number of patients with IIH found to have associated non-thrombotic dural venous sinus stenosis.
Angioplasty and stenting for intractable pulsatile tinnitus caused by dural venous sinus stenosis: A case series report.
On day six magnetic resonance imaging (MRI) and magnetic resonance angiography excluded acute infarction and dural venous sinus thrombosis but showed features suggestive of both intracranial hypotension and cortical oedema in the posterior regions of the brain (Figure 1).