What is lesion?

  • (noun): Any visible abnormal structural change in a bodily part.
    See also — Additional definitions below


A lesion is any abnormality in the tissue of an organism (in layman's terms, "damage"), usually caused by disease or trauma. Lesion is derived from the Latin word laesio which means injury.

Read more about Lesion.

Some articles on lesion:

Research Using Lesions - Research With Animals
... Using animal subjects gives researchers the ability to lesion specific areas in the subjects, allowing them to quickly acquire a large group of subjects ...
Middle Cerebral Artery Syndrome - Signs and Symptoms
... aphasia as a result of a dominant hemisphere lesion (usually the left brain) Perceptual deficits hemispatial neglect, anosognosia, apraxia, and spatial disorganization as a result of a ...
Fungating Lesion
... A fungating lesion is a type of skin lesion that is marked by ulcerations (breaks on the skin or surface of an organ) and necrosis (death of living tissue) and that usually has a bad ... This kind of lesion may occur in many types of cancer, including breast cancer, melanoma, and squamous cell carcinoma, and especially in advanced disease ...
Charcot-Wilbrand Syndrome - Physiological Causes
... In terms of localization, the lesion or damaged tissue is most often localized to the lateral(sides) or mesial(middle) occipitotemporal regions, and typically appears bilaterally(affecting both sides ... localization however has not been illuminated and can most accurately be summarized as "a lesion in an acute phase affecting the posterior regions” ... there is typically an association with focal, acute-onset cerebral lesions like hemorrhage, thrombosis, or trauma ...
Periodontal Disease - Diagnosis
... This new classification divided plaque-induced periodontal lesions into four stages initial lesion early lesion established lesion advanced lesion ...

More definitions of "lesion":

  • (noun): Any break in the skin or an organ caused by violence or surgical incision.
    Synonyms: wound