Margin

Margin (medicine)

Margin (pronunciation: /ˈmɑːr.dʒɪn/) in the medical context refers to the edge or border of a tissue or structure. It is often used to describe the boundary area of a lesion, tumor, or other pathological entity.

Etymology

The term 'margin' originates from the Latin word 'margo', meaning edge or border.

Medical Usage

In surgery, the term 'margin' is used to describe the area of normal tissue surrounding a tumor that is removed along with the tumor during surgery. The goal is to ensure that no cancer cells remain in the body. This is referred to as a 'clear' or 'negative' margin. A 'positive' margin indicates that cancer cells are found at the edge of the material removed.

In radiology, 'margin' describes the edge or border of a lesion as seen on an imaging study. The characteristics of a lesion's margin (e.g., smooth, irregular) can help in diagnosing the type of lesion.

In pathology, 'margin' refers to the edge of a sample of tissue that has been surgically removed. The pathologist examines the margins under a microscope to check for the presence of disease.

Related Terms

• Clear Margin
• Positive Margin
• Negative Margin
• Surgical Margin
• Radiological Margin

See Also

• Surgery
• Radiology
• Pathology

External links

• Medical encyclopedia article on Margin
• Wikipedia's article - Margin

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