Lesion

(Redirected from Lesions)
Jump to: navigation, search

WikiDoc Resources for Lesion

Articles

Most recent articles on Lesion

Most cited articles on Lesion

Review articles on Lesion

Articles on Lesion in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Lesion

Images of Lesion

Photos of Lesion

Podcasts & MP3s on Lesion

Videos on Lesion

Evidence Based Medicine

Cochrane Collaboration on Lesion

Bandolier on Lesion

TRIP on Lesion

Clinical Trials

Ongoing Trials on Lesion at Clinical Trials.gov

Trial results on Lesion

Clinical Trials on Lesion at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Lesion

NICE Guidance on Lesion

NHS PRODIGY Guidance

FDA on Lesion

CDC on Lesion

Books

Books on Lesion

News

Lesion in the news

Be alerted to news on Lesion

News trends on Lesion

Commentary

Blogs on Lesion

Definitions

Definitions of Lesion

Patient Resources / Community

Patient resources on Lesion

Discussion groups on Lesion

Patient Handouts on Lesion

Directions to Hospitals Treating Lesion

Risk calculators and risk factors for Lesion

Healthcare Provider Resources

Symptoms of Lesion

Causes & Risk Factors for Lesion

Diagnostic studies for Lesion

Treatment of Lesion

Continuing Medical Education (CME)

CME Programs on Lesion

International

Lesion en Espanol

Lesion en Francais

Business

Lesion in the Marketplace

Patents on Lesion

Experimental / Informatics

List of terms related to Lesion

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


Overview

Lesion is derived from the Latin word "laesio" which means "injury."

A lesion is any abnormal tissue found on or in an organism, usually damaged by disease or trauma.

Causes of lesions

Lesions are caused by any process that damages tissues. A cancerous tumor is an example of a lesion, however the surrounding tissue damaged by a tumour is also a lesion. Trauma, including electrocution and chemical burns cause lesions. Certain diseases present lesions, for example the skin deformities caused by chicken pox. Lesions can also be caused by metabolic processes, like an ulcer or autoimmune activity, as in the case with many forms of arthritis.

Lesions are sometimes intentionally inflicted during neurosurgery, such as the carefully-placed brain lesion used to treat epilepsy and other brain disorders.

Note that lesions are not limited to animals or humans; damaged plants are said to have lesions.

Types of lesions

Because the definition of lesion is so broad, the varieties of lesions are virtually endless. They are subsequently classified by their features. If a lesion is caused by cancer it will be classified as malignant versus benign. They may be classified by the shape they form, as is the case with many ulcers which appear like as a bullseye or 'target'. Their size may be specified as gross or histologic depending on if they are visible to the unaided eye or if they require a microscope to see.

An additional classification that is sometimes used is based on whether or not a lesion occupies space. A space occupying lesion, as the name suggests, occupies space and may impinge on nearby structures, whereas a non space occupying lesion is simply a hole in the tissue, e.g. a small area of the brain that has turned to fluid following a stroke.

Some lesions have specialized names, like the Gohn lesions in the lungs of tuberculosis victims. The characteristic skin lesions of a varicella-zoster virus infection are called chickenpox. Lesion of the teeth are usually called dental caries.

Finally, they are often classified by their location. For example, compare a 'skin lesion' versus a 'brain lesion'.

See also

External Links

Brain Lesion Locator. Diagnosis of Brain Lesions


de:Läsion id:Lesi sv:Lesion




Linked-in.jpg