In the arc method of localization, the arc is drawn with the radius from what to the lesion?

In the arc method of localization, the arc is drawn with the radius extending from the nipple to the lesion. This technique is based on the linear anatomy of the breast, where the nipple serves as a fixed reference point. The arc method essentially helps to determine the location of an abnormality or lesion within the breast relative to the nipple, allowing for more precise targeting during procedures such as biopsies or surgical excisions.

Utilizing the nipple as the reference point facilitates consistency in localization because the nipple's position is generally stable and does not shift during imaging or treatment. By measuring the distance from the nipple to the lesion and creating an arc, practitioners can accurately gauge the lesion's position within the three-dimensional space of the breast tissue. This method enhances the effectiveness of breast imaging and therapeutic interventions.