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Translating the 2-dimensional mammogram into a 3-dimensional breast: Identifying factors that influence the movement
1Department of Surgery, Henry Ford Hospital, Detroit, Michigan.
Background:
Pre-operative measurements from the skin to a wire-localized breast lesion can differ from operating room measurements. This study was designed to measure the discrepancies and study factors that may contribute to wire movement.
Methods:
Prospective data were collected on patients who underwent wire localization lumpectomy. Clip and hook location, breast size, density, and direction of wire placement were the main focus of the analysis.
Results:
Wire movement was more likely with longer distance from skin to hook or clip, larger breast size (especially if "fatty"), longer time between wire placement and surgery start time, and medial wire placement in larger breast. Age, body mass index, presence of mass, malignant diagnosis, tumor grade, and clip distance to the chest wall were not associated with wire movement. A longer distance from skin to hook correlated with larger specimen volume.
Conclusions:
Translation of the lesion location from a 2-dimensional mammogram into 3-dimensional breasts is sometimes discrepant because of movement of the localizing wire. Breast size, distance of skin to clip or hook, and wire exit site in larger breasts have a significant impact on wire movement. This information may guide the surgeon's skin incision and extent of excision.
