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

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

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)

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

sinus

[′sī·nəs]

(biology)

A cavity, recess, or depression in an organ, tissue, or other part of an animal body.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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–]

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References in periodicals archive

of Patients Post-Diphtheritic Paralysis 45 GB Syndrome 30 Other Infections 30 Tumours 28 Vascular Disease 20 MFS 2 MS and ADEM 14 Cavernous Sinus Syndrome 5 ACM I 3 CNS Complications of Systemic Cancer 6 Trauma 5 CIDP 3 Miscellaneous 8 Unknown 1 Table 3: Infectious Causes of MCN (Excluding Diphtheria) Number of Type of Infection Patients 1.

A clinical study of multiple cranial neuropathies (MCN)

Third, 4th, 5th and 6th cranial nerve problems are seen in not only JS but also superior orbital fissure syndrome (also known as Rochon-Duvignaud Syndrome) and cavernous sinus syndrome.3,6 The most common complaints of these three syndromes are retroorbital pain and all are characterised by ophthalmoplegia and ptosis.3,6 Cavernous sinuses contain internal carotid artery and its sympathetic plexus, so orbital congestion and proptosis are seen in cases with cavernous sinus syndrome.

Otitis complicated by Jacod's syndrome with unusal facial nerve involvement: Case report and review of literature

The early and aggressive use of antibiotics for a septic cavernous sinus syndrome can rescue an otherwise hopeless situation.

Cavernous sinus thrombosis--a possible lethal complication of facial abscess manipulation

(1,2,6,7,11-13) Edema, facial bulging, epistaxis, a nasal mass, headache, rhinorrhea, proptosis, paralysis of the cranial nerves, and cavernous sinus syndrome can also occur.

Primary non-Hodgkin's lymphoma of the frontal sinus: case report and review of the literature