Lesion
A
lesion is a non-specific term referring to abnormal
tissue in the body. It can be caused by any disease process including
trauma (physical, chemical, electrical),
infection,
neoplasm,
metabolic and
autoimmune.
Lesions can also be inflicted intentionally during
surgery, for example to specific regions of the
brain to treat
epilepsy. Thus a lesion can mean inflicting damage to an area of the brain i.e. by burning or cutting, in order to study the effects of disabling this area of the brain.
Not all lesions require treatment.
Lesion is derived from a
Latin word which means "injury."
