A lesion is defined as any abnormal change in the structure or function of an organ or tissue caused by disease, injury, or other pathological processes. It can refer to various types of abnormalities, such as a wound, injury, or an area of diseased or damaged tissue. Lesions can be superficial or deep, depending on their location and depth within the body.
In a medical context, a lesion is often diagnosed through clinical examination, imaging techniques (such as X-rays, magnetic resonance imaging (MRI), or computed tomography (CT) scans), or biopsy. The term "lesion" is commonly used in various fields of medicine, including dermatology, radiology, neurology, and pathology.
Lesions can manifest in different forms depending on the underlying cause or disease process. They can appear as open sores, ulcers, scars, tumors, or abnormal growths. Lesions can also be categorized as infectious, inflammatory, neoplastic (related to the growth of tumors), or degenerative, among others.
The identification and characterization of lesions are essential in diagnosing and managing diseases, as they often serve as important markers or indicators of underlying health conditions. Treatment strategies may vary depending on the type, location, and severity of the lesion, and may include surgical removal, medication, radiation therapy, or other interventions aimed at mitigating or eliminating the underlying cause of the lesion.
