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Topic: Lesion


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In the News (Sun 18 Aug 19)

  
  Lesion - Wikipedia, the free encyclopedia
A lesion is a non-specific term referring to abnormal tissue in the body.
Lesions can also be inflicted intentionally during surgery, for example to specific regions of the brain to treat epilepsy.
Lesion is derived from a Latin word which means "injury."
en.wikipedia.org /wiki/Lesion   (123 words)

  
 lesion - Search Results - MSN Encarta
A lesion is a wound or area of damage.
Researchers using lesion methods damage, destroy, or remove a particular part of a laboratory animal’s brain....
After a person is infected with the smallpox virus, about 12 days pass before the person begins to feel sick, a time known as the incubation period....
ca.encarta.msn.com /lesion.html   (128 words)

  
 American Lesion - Wikipedia, the free encyclopedia
American Lesion is a solo album by Greg Graffin, lead singer of the punk band, Bad Religion.
American Lesion for the most part features Graffin's voice alone, and each song is based around a piano rather than a guitar.
The songs on American Lesion are much more personal; the songs were apparently written during the breakup of his marriage, making the album very sentimental.
en.wikipedia.org /wiki/American_Lesion   (206 words)

  
 BERC Publications: The Nature of a Fatal DNA Lesion   (Site not responding. Last check: 2007-10-22)
All that is required to predict the probability a cell survives a dose of radiation is a model to estimate the distribution of fatal lesions produced among a group of irradiated cells.
Then once the distribution of fatal lesions in a group of cells has been determined, the number of cells surviving irradiation is easily computed because all cells with one or more fatal lesions in their DNA die.
To formalize the relationship between fatal lesions and cell survival, a fatal lesion is the minimum amount of some type of DNA damage (or the expected number of mutations) required to kill, in the reproductive sense, a cell.
www.pnl.gov /berc/bg/fatal_lesion.html   (1551 words)

  
 Lesion...What Does The Doctor Mean? - Cancer information on MedicineNet.com
A benign lesion is non-cancerous whereas a malignant lesion is cancerous.
For example, a biopsy of a skin lesion may prove it to be benign or malignant, or evolving into a malignant lesion (called a premalignant lesion).
For instance, a Ghon lesion (or Ghon focus) is the scar-like "signature" in the lungs of adults left by tuberculosis in childhood.
www.medicinenet.com /script/main/art.asp?articlekey=9695&rd=1   (432 words)

  
 Skin lesion removal
Lesions that are confined to the surface may be sampled with a shave biopsy, where the physician holds a scalpel blade parallel to the surface of the skin and slides the blade across the base of the lesion, removing a sample.
If a lesion is suspected to be cancerous, the physician will not cut directly around the lesion, but will attempt to also remove a healthy margin of tissue surrounding it.
It is typically sprayed on the lesion in several freeze-thaw cycles to ensure adequate destruction of the lesion.
www.lifesteps.com /gm/Atoz/ency/skin_lesion_removal_pr.jsp   (1581 words)

  
 BERC Publications: What is a DNA Lesion?   (Site not responding. Last check: 2007-10-22)
The fidelity of lesion repair tends to increase as the polarity increases.
Lesions composed of a single EDS have a EDS density of zero.
The fidelity of lesion repair thus tends to increase as the density decreases.
www.pnl.gov /berc/bg/WhatIsALesion.html   (1416 words)

  
 Newborn with a scalp lesion American Family Physician - Find Articles
The lesion was hairless, measuring 0.5 cm in diameter, with a slightly denuded appearance and a rolled edge (Figure 2).
Lesions with findings such as vascular flushing, tethering (which may be a sign of a dural attachment), or abnormal surrounding hair may signal further abnormalities and warrant evaluation.
Lesions typically are hairless and yellowish and often occur on the scalp or face.
www.findarticles.com /p/articles/mi_m3225/is_8_72/ai_n15855456   (819 words)

  
 Bundling of Lesion Excision and Repair Procedures
If multiple distinct lesions are removed using different methods, an anatomic modifier or the 59 modifier would be used to indicate a different site, a different method, or a different lesion.
A lesion biopsy represents the partial removal of a lesion and is frequently performed as a part of a lesion excision, in order for example, to procure a pathological specimen.
When a biopsy is performed as part of a lesion removal, it is considered inherent to the overall procedure and is not reported separately.
www.entnet.org /practice/resources/Bundling-of-Lesion-Excision-and-Repair-Procedures.cfm   (534 words)

  
 Fact Sheet: Nodules, Polyps, and Cysts
Vocal cord lesions are one of the most common causes of voice problems and are generally seen in three forms; nodules, polyps, and cysts.
This type of lesion is thought to develop from trauma or repeated injury caused by the lesion on the opposite vocal cord.
Lesions are thought to arise following "heavy" or traumatic use of the voice, including voice misuse such as speaking in an improper pitch, speaking excessively, screaming or yelling, or using the voice excessively while sick.
www.entnet.org /healthinfo/throat/vocal-cord-lesions.cfm   (689 words)

  
 lesion - multiple sclerosis encyclopaedia   (Site not responding. Last check: 2007-10-22)
In multiple sclerosis, lesions, also known as plaques, are patches of inflammation in the central nervous system (CNS) in which the nerve cells (neurons) have been stripped of their myelin, an insulating fatty protein.
Lesions tend to be randomly distributed in the CNS white matter.
Recent research indicates that there may be at least four different types of lesion indicating four different forms of multiple sclerosis or even that MS is in fact four different diseases.
www.mult-sclerosis.org /lesion.html   (329 words)

  
 Clerkship - USC Department of Surgery   (Site not responding. Last check: 2007-10-22)
Slide 11: Lentigo Maligna: The lesion characteristically demonstrates sharply demarcated, individual and confluent macules with variegated color from light to dark brown.
Slide 16: Leukoplakia: This is the mucus membrane analogue of solar keratosis.
The lesion is poorly circumscribed with irregular margins.
www.surgery.usc.edu /clerkship/slides-commonskinlesions.html   (1035 words)

  
 Epilepsy and Lesionectomy
A lesionectomy is an operation to remove a lesion -- a damaged or abnormally functioning area -- in the brain.
A lesion causes seizures (is the seizure focus) in about 20% to 30% of people with epilepsy that do not improve after taking medication (intractable or refractory epilepsy).
In addition, it must be possible to remove the lesion and surrounding brain tissue without causing damage to areas of the brain responsible for vital functions, such as movement, sensation, language and memory.
www.webmd.com /content/article/88/99675.htm   (699 words)

  
 Dermatitis, herpetiformis - close-up of lesion
Dermatitis herpetiformis is a chronic inflammatory disease that produces lesions that burn and itch intensely.
This is a close-up of dermatitis herpetiformis lesions.
The lesions are red (erythematous) and may be slightly raised (papular), form small pus-filled areas (pustules), or there may be blisters (vesicles).
www.stlukes-stl.com /imagepages/1406.htm   (151 words)

  
 Lesion: What does it mean? - MayoClinic.com
A lesion is an area that appears abnormal.
A lesion may be found externally on physical examination or internally on an imaging study, such as X-ray or ultrasound.
Lesions are typically due to the presence of some abnormal tissue — often due to injury or disease.
www.mayoclinic.com /health/lesion/AN00973   (208 words)

  
 Lesion definition - Medical Dictionary definitions of popular medical terms
Lesion: Pronounced "lee-sion" with the emphasis on the "lee," a lesion can be almost any abnormality involving any tissue or organ due to any disease or any injury.
Lesions can, for instance, be categorized according to whether or not they are caused by cancer.
Lesions can be named for persons who first described them.
www.medterms.com /script/main/art.asp?articlekey=4135   (486 words)

  
 Will just removing the lesion stop my seizures? : Epilepsy.com
For lesions in the temporal lobe, this means that your surgery will be more like a temporal lobectomy, the most common kind of epilepsy surgery for people who do not have visible lesions.
If your lesion is close to the hippocampus or if your seizures began when you were very young, it's likely that an examination would show that many cells have been lost.
If the lesion is in the dominant temporal lobe, subdural grid electrodes may be used to record seizures and map regions of language function.
www.epilepsy.com /articles/ar_1066717256.html   (547 words)

  
 Skin lesion KOH exam
The skin lesion KOH exam is a test to diagnose a fungal infection of the skin.
The lesion is scraped, using a blunt edge such as the edge of a microscope slide.
The scrapings from the skin lesion are placed in a solution of potassium hydroxide (KOH) and examined under the microscope.
www.umc-cares.org /health_info/adam/articles/003761.asp   (330 words)

  
 eMedicine - Stener Lesion : Article by Joseph Rectenwald, MD   (Site not responding. Last check: 2007-10-22)
Pathophysiology: Stener described a lesion produced by forced thumb abduction in which the distal attachment of the UCL was traumatically avulsed from the proximal phalanx of the thumb.
Stener described a lesion of the UCL in which the distal attachment was traumatically avulsed from the proximal phalanx of the thumb.
With a Stener lesion, a situation exists in which the MCP joint of the thumb is rendered permanently unstable because the UCL is prevented from healing by the interposed adductor aponeurosis.
www.emedicine.com /orthoped/topic313.htm   (2862 words)

  
 Skin Lesion Biopsy - Page 3
Used to remove an entire lesion when the lesion is small, or when the lesion is large but is located in an area of the body where it can be removed without affecting the patient’s appearance.
Sometimes, lesions are removed by a process called curettage, during which a lesion is scraped off with a scoop–shaped instrument called a curet.
Lesions filled with fluid may be examined during a separate process called a skin lesion aspiration.
allergy.healthcentersonline.com /skinconditions/skinlesionbiopsy3.cfm   (443 words)

  
 Skin Lesion Recognition
Primary lesions occur de novo in the skin and often reflect the underlying etiology.
It must be kept in mind that lesions in skin disease may undergo a sequential evolution, resulting in a variety of identifiable changes in the skin, that when observed together can assist in deducing the underlying pathologic changes, and formulating a differential diagnosis.
These are often regarded as secondary lesions, but can be thought of as ruptured, peripherally spreading pustules, vesicles or bullae, giving rise to the appearance of a ring of scale.
www.cvm.okstate.edu /instruction/mm_curr/dermatology/glossary.htm   (1153 words)

  
 Lesion reconstruction notes
The general idea is that the lesions are traced onto a standard template image of the brain.
With this package, the user draws the lesion on the patient's actual MRI or CT scan, and then the image is automatically normalized (coregistered) to a template brain that includes overlays of the Damasio and Damasio Brodmann Area overlays.
Note that a posterior lesion has been mapped onto the template image, and that the lesion can also be displayed on the Brodmann Area map.
www.sph.sc.edu /comd/rorden/lesion.html   (1731 words)

  
 Dr. Koop - Herpes viral culture of lesion
Herpes viral culture of a lesion is a test to confirm the presence of herpes simplex virus in a skin sore.
A specimen from a skin lesion (often a genital sore) is collected during the acute phase (worst part) of an outbreak and placed in a special substance called medium.
The specimen may be placed in cell cultures, so they can replicate to help identification, or it may be identified by monoclonal antibodies that detect early antigens of herpes simplex virus.
www.drkoop.com /ency/93/003739.html   (357 words)

  
 Dieulafoy's lesion: A rare cause of gastrointestinal bleeding - MayoClinic.com
Dieulafoy's lesion is an abnormality in a small artery that supplies blood to the gastrointestinal tract, usually in the stomach.
Dieulafoy's lesion is a rare cause of severe gastrointestinal bleeding that requires emergency medical treatment.
In this procedure, a thin, flexible tube with a camera attached is inserted through your mouth or anus, which allows the doctor to see inside your stomach or colon.
www.mayoclinic.com /health/dieulafoys-lesion/AN00705   (271 words)

  
 Dr. Koop - Oropharynx lesion biopsy
An oropharynx lesion biopsy is surgery in which tissue from an abnormal growth or mouth sore is removed and checked for problems.
For large sores or sores of the throat, a general anesthetic that puts the patient to sleep may be needed.
The entire lesion, or a small portion of larger lesions, is removed and sent to the laboratory to check for problems.
www.drkoop.com /ency/93/003850.html   (367 words)

  
 The MSDS HyperGlossary: Lesion
A lesion is tissue which has been structurally changed due to disease or injury and usually occurs as or includes a fissure, wound, or other break in the tissue.
Lesions can occur in various parts of the body such as the skin and other organs.
Skin lesions are abnormal growths or areas of skin that do not resemble the normal skin surrounding them.
www.ilpi.com /msds/ref/lesion.html   (251 words)

  
 National MS Society | The MS Lesion Project   (Site not responding. Last check: 2007-10-22)
Within each person, all lesions were the same, but lesions differed from person to person.
The investigators are analyzing MS lesions in brain tissues from biopsies and autopsies to identify the types of immune cells and other immune factors involved with tissue destruction.
The investigators are also examining clinical characteristics of the individuals from whom these tissues were taken, including clinical symptoms and stages of disease, response to therapy, magnetic resonance images, and immune characteristics of blood samples.
www.nationalmssociety.org /Research-TargetedLesion.asp   (555 words)

  
 Adult Health Advisor 2005.4: Excision of a Skin Lesion
An excision of a skin lesion is a procedure in which your health care provider removes a sore or growth (a lesion) from your skin and stitches the skin back together.
The lesion may rub against your clothing or is irritating or uncomfortable.
If the lesion was caused by a disease, this procedure may help your health care provider diagnose the problem.
www.med.umich.edu /1libr/aha/aha_exskin_crs.htm   (495 words)

  
 National MS Society | Progress in MS Lesion Project   (Site not responding. Last check: 2007-10-22)
The data suggest that within an individual, the lesion pattern is the same, but between individuals, it can be very different.
In active lesions of these individuals, a specific myelin protein called MAG (myelin-associated glycoprotein) was more likely to be lost, with other myelin proteins being well preserved.
The team is preparing to report findings about individuals with one pattern of lesion who showed findings on MRI that were distinct from other individuals.
www.nationalmssociety.org /Targeted-LesionProgress.asp   (393 words)

  
 The Lesion - Rudolf Virchow (1821 - 1902)   (Site not responding. Last check: 2007-10-22)
The Lesion - Rudolf Virchow (1821 - 1902)
Rudolf Virchow born in Pomerania, and educated at the University of Berlin, was Professor of Pathology at Wurzburg and then Berlin.
Virchow showed that lesions were composed of cells.
www.umanitoba.ca /faculties/medicine/history/lesion/lesion10.html   (122 words)

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