Lesion : (noun)
1: any visible abnormal structural change in a bodily part
2: any break in the skin or an organ caused by violence or
surgical incision [syn: wound]
Based on WordNet 2.0
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Lesion : \Le"sion\ (l[=e]"zh[u^]n), n. [F. l['e]sion, L. laesio,
fr. laedere, laesum, to hurt, injure.]
A hurt; an injury. Specifically:
(a) (Civil Law) Loss sustained from failure to fulfill a
bargain or contract. --Burrill.
(b) (Med.) Any morbid change in the exercise of functions or
the texture of organs. --Dunglison.
Based on Webster's Revised Unabridged Dictionary
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LESION, contracts. In the civil law this term is used to signify the injury
suffered, in consequence of inequality of situation, by one who does not
receive a full equivalent for what he gives in a commutative contract.
2. The remedy given for this injury, is founded on its being the effect
of implied error or imposition; for in every commutative contract,
equivalents are supposed to be given and received. Louis. Code, 1854.
Persons of full age, however, are not allowed in point of law to object to
their agreements as being injurious, unless the injury be excessive. Poth.
Oblig. P. 1, c. 1, s. 1, art. 3, Sec. 4. But minors are admitted to
restitution, not only against any excessive inequality, but against any
inequality whatever. Poth. Oblig. P. 1, c. 1, s. 1, art. 3, Sec. 5; Louis.
Code, art. 1858.
3. Courts of chancery relieve upon terms of redemption and set aside
contracts entered into by expectant heirs dealing for their expectancies, on
the ground of mere inadequacy of price. 1 Vern. 167; 2 Cox, 80; 2 Cas. in
Ch. 136; 1 Vern. 141; 2 Vern. 121; 2 Freem. 111; 2 Vent. 359; 2 Vern. 14; 2
Rep. in Ch. 396; 1 P. W. 312; 1 Bro. C. C. 7; 3 P. Wms. 393, n.; 2 Atk. 133;
2 Ves. 125; 1 Atk. 301; 1 Wils. 286; 1 Wils. 320; 1 Bro. P. 6. ed. Toml.
198; 1 Bro. C. C. 1; 16 Ves. 512; Sugd. on Vend. 231, n. k.; 1 Ball & B.
330; Wightw. 25; 3 Ves. & Bea. 117; 2 Swanst. R. 147, n.; Fonb. notes to the
Treatise of Equity, B, 1, c. 2, s. 9. A contract cannot stand where the
party has availed himself of a confidential situation, in order to obtain
some selfish advantage. Note to Crowe v. Ballard. 1 Ves. jun. 125; 1 Hov.
Supp. 66, 7. Note to Wharton v. May. 5 Ves. 27; 1 Hov. Supp. 378. See
Catching bargain; Fraud; Sale.
Based on Bouvier's Law Dictionary, Revised 6th Ed (1856) [Bouvier_Law_Dictionary]:
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Lesion : 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.
There are, not surprisingly, many types of lesions. There are also a number of different ways of classifying and naming lesions. Lesions can, for instance, be categorized according to whether or not
they are caused by cancer. 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).
Lesions can be defined according to the patterns they form. For example, a bull's-eye or target lesion is one that looks like the bull's eye on a target. (In an X-ray of the duodenum, a bull's-eye
lesion can represent a tumor with an ulcer (crater) in the center.) A coin lesion is a round shadow resembling a coin on a chest X-ray. It, too, is usually due to a tumor.
Lesions can be named for persons who first described them. For instance, a Ghon lesion (or Ghon focus) is the scar-like "signature" in the lungs of adults left by tuberculosis in childhood.
Lesions can also be categorized by their size. A gross lesion is one that can be seen with the naked eye. A microscopic or histologic lesion requires the magnification of a microscope to be seen.
The basis of sickle cell disease is a molecular lesion, one that is not even visible with a microscope but is only detectable on the molecular (protein or DNA) level.
Location is another basis for naming lesions. In neurology, a central lesion involves the brain or spinal cord, i.e., the central nervous system. A peripheral lesion involves the nerves away from
the spinal cord and does not involve the central nervous system.
There is a virtually endless assortment of lesions in medicine: primary lesions, secondary lesions, impaction lesions, indiscriminate lesions, irritative lesions, etc. Many are named for people
including the Armanni-Ebstein lesion, a Bankart lesion, a Blumenthal lesion, and so on.
The word "lesion" comes from the Latin noun "laesio" meaning "an attack or injury" which is related in Latin to the verb "laedere" = "to hurt, strike or wound."
Based on Bouvier's Law Dictionary, Revised 6th Ed (1856) [Bouvier_Law_Dictionary]:
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