The term 'lesion' has a couple of senses: 1: an injury to living tissue (especially an injury involving a cut or break in the skin); 2: any localized abnormal structural change in a bodily part
It is an abnormality seen on X-rays where the bone is thicker or more dense in a specific area or areas. Both benign or malignant tumors can have this appearance. More commonly, malignant tumors are...