Any pathological change to a tissue or organ, local in nature, caused by injury, surgical procedures, chemicals, or infection that may result in a loss of normal function.

An area of abnormal tissue change.

Any discontinuity or disruption of tissue caused by disease or trauma.

A break in the cellular integrity of a tissue or organ. Lesions may be caused by infections, chemicals, or trauma to the tissue.

A wound, sore or damage to the body.

A damage to tissue caused by disease or injury.

A wound or injury; an abnormality of a cell or tissue that is indicative of disease.

A general term for an abnormality anywhere in or on the body, due to injury or disease, including a wound, an injury, a tumor, a change in body tissue, a sore, or a rash.

Structural or functional alterations.

A wound, injury, or other pathologic alteration of an organ or tissue. Skin lesions include sores, rashes, and boils. Lesions can be benign or malignant (cancerous).

A zone of tissue with impaired function as a result of damage by disease or wounding. Apart from direct physical injury, examples of primary lesions include abscesses, ulcers, and tumors; secondary lesions (such as crusts and scars) are derived from primary ones.

Originally the term meant an injury, but it is now applied generally to all disease changes in organs and tissues.

A circumscribed area of pathologically altered tissue.

Mark on the skin; may indicate an injury or damage that changes the structure of tissues or organs.

An area of abnormal tissue. A lesion may be benign (noncancerous) or malignant (cancerous).

Any discernible, localized irregularity in the skin’s tissues, such as a wound, ulceration, eruption, or abscess.

A comprehensive expression used to describe any deviation from the usual structure or operation within any body part. This term can encompass conditions such as wounds, infections, tumors, abscesses, or chemical irregularities.

Any harm to living tissue resulting from either disease or injury.