abnormal appearance or shape in the tissues of an organism

A lesion is any damage or abnormal change in the tissue of an organism, usually caused by disease or trauma. Lesion is derived from the Latin laesio "injury".[1] Lesions may occur in plants as well as animals.

Lesion on the nose

References change

  1. "Lesion...What Does The Doctor Mean?". MedicineNet. Archived from the original on 2021-11-30. Retrieved 2016-03-03.