scar

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scar,

fibrous connective tissueconnective tissue,
supportive tissue widely distributed in the body, characterized by large amounts of intercellular substance and relatively few cells. The intercellular material, or matrix, is produced by the cells and gives the tissue its particular character.
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 that forms at the site of injury or disease in any tissue of the body. Scar tissue may replace injured skin and underlying muscle, damaged heart muscle, or diseased areas of internal organs such as the liver. Dense and thick, it is usually paler than the surrounding tissue because it is poorly supplied with blood, and although it structurally replaces destroyed tissue, it cannot perform the functions of the missing tissue. Scar tissue may therefore limit the range of muscle movement or prevent proper circulation of fluids when affecting the lymphatic or circulatory system. Extensively scarred tissue may lose its ability to function normally.

Scar

 

the end result of the development of connective tissue at the site of the healing of a wound or ulcer. The timely surgical treatment of an incised wound with smooth margins leaves a soft and sometimes barely noticeable linear scar. Large wounds that suppurate and heal by second intention form granulations and subsequently epithelize, resulting in the formation of broad scars that are attached to underlying tissues.

Excessive scar tissue that is elevated above the skin surface is called a keloid. Extensive scars formed after burns or the prolonged healing of suppurative wounds in the area of extremity joints or on the neck result in a limitation of mobility, or contracture; these scars require plastic surgery. Scars that develop after the healing of gastric or duodenal ulcers often lead to the deformation of the stomach and duodenum, the disruption of evacuation from the stomach, and the development of pyloric stenosis.

scar

[skär]
(geology)
A steep, rocky eminence, such as a cliff or precipice, where bare rock is well exposed. Also known as scaur; scaw.
(medicine)
A permanent mark on the skin or other tissue, formed from connective-tissue replacement of tissue destroyed by a wound or disease process.

scar

1
1. any mark left on the skin or other tissue following the healing of a wound
2. the mark on a plant indicating the former point of attachment of a part, esp the attachment of a leaf to a stem

scar

2
1. an irregular enlongated trench-like feature on a land surface that often exposes bedrock
2. a similar formation in a river or sea
References in periodicals archive ?
In the case of the 20-year old girl, the performance of Thyroidectomy ensured a quick and scarless recovery for the patient and helped the surgeons perform the operation with utmost ease and precision.
PATIENTS at a Teesside hospital have benefited from scarless surgery, following a masterclass performed by US medical experts visiting Middlesbrough.
The AFIRM has five major research programs: limb repair and salvage, craniofacial reconstruction, burn repair, scarless wound repair and compartment syndrome repair.
The scarless procedure represents a significant improvement in minimally invasive bariatric surgery, and losses approaching 40% of excess body weight can be expected within a year, according to the Cleveland Clinic.
Scarless and site-directed mutagenesis in Salmonella enteritidis chromosome BMC Biotechnology.
Dr Thomas Varughese, who was a cancer surgeon at India's premier cancer institute Tata Memorial Cancer Centre for over ten years, and currently chairs the cancer division of Lakeshore hospital and research centre, believes that cancer patients are entitled to organ preservation, scarless surgeries, and one-day discharges from hospitals.
Scarless single port transumbilical nephrectomy and pyeloplasty: first clinical report.
And what we see there is that these primitive embryonic cells are unusually plastic, by which I mean that they can be scooped up with a syringe or a scalpel and transplanted into corresponding tissue and recognize where they are, and promote scarless regeneration.
Her last lover, so many years ago, had still been smooth-skinned and scarless both literally and figuratively.
KARACHI, September 09, 2009 (Balochistan Times): The first Scarless surgery in Pakistan has recently been performed at Dr.
A SURGEON is pioneering virtually scarless surgery to remove organs through the belly button.
A suppression of hyaluronidase will allow accumulation of enough hyaluronan in the extracellular matrix for scarless wound repair and has been functionally linked to the healing effect of topical application of Echinacea on vocal fold wounds (Rousseau et al.