sinus

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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 ?
Management of an Endodontic Infection with an Extra Oral Sinus Tract in a Single Visit: A Case Report.
Therefore, a small sliver of thyroid cartilage was cut from the posterior border of the thyroid ala to trace the sinus tract up to the floor of the piriform fossa (figure 1).
If it is assumed medical therapy has resulted in disease stabilization, C[O.sub.2] laser excision of sinus tracts under local anesthesia can then be employed as an office procedure to turn back the clock and return to an earlier stage of disease.
Historically, open healing technique has been used by surgeons after excising the pilonidal sinus tract and debridement of any infected tissue.
Surgical de-roofing and wide excision are considered to be the only curative treatments for HS because persistent sinus tracts are removed with these techniques.
Nabiha, "Treatment of odontogenic cutaneous sinus tract misdiagnosed for 6 years," Dental, Oral and Craniofacial Research, vol.
Neck ultrasound showed a blind ending midline sinus tract arising from subcutaneous tissues, without any other anomalies.
We report a novel case in which a patient voluntarily discontinued AST after 10 years of treatment, and paradoxically experienced full resolution of all signs of chronic PJI including recovery of his left-sided draining sinus tract and has had no signs of infection over the last 10 years.
The sinus tract traced down to a hole approximately 15 x 15 mm in the cortex of the medial femoral condyle.
Duration of the phenol in the sinus tract is an important factor for success of the application.
The diagnosis is confirmed by detection of the sinus tract extending from the sinus opening toward the anterior bladder wall by USG, fistulography or MRI.