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Related to cavernous sinus syndrome: Horner's syndrome


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 It might be outdated or ideologically biased.



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–]

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A cavity, recess, or depression in an organ, tissue, or other part of an animal body.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


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

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