any localized abnormal structural change in a bodily part
<noun.state>
an injury to living tissue (especially an injury involving a cut or break in the skin)
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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.
Kornblith said that "in order to assure that any tumor cells peripheral to the main lesion are destroyed, he will be receiving chemotherapy as well.
"It may well be that the majority of small-cell lung cancers involve a lesion in the retinoblastoma gene as well as several others," said White.
A 42-year-old maintenance man at a North Carolina mill became ill last July with a small red lesion on his arm, and developed pain, fever and chills over the following week, the Centers for Disease Control reported.
The biotechnology company said the non-radioactive DNA probe-based test allows detection of an active herpes infection within two hours after sampling a suspected lesion.
Spetzler said Presser is being treated with radiation for one additional brain lesion and may have two others.