What is the clinical significance of a skin retraction on a mammogram?

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Skin retraction on a mammogram signals a finding that may reflect something clinically important, not just a benign artifact. It can occur when a breast cancer tumor pulls on surrounding tissues, creating tethering that retracts the skin. It can also result from scar tissue from prior surgery, which contracts and pulls the skin inward. Edema or inflammatory changes around the breast can produce similar retraction as well. Because this sign is not specific to one cause, the right approach is to correlate with the patient’s history and exam and pursue further imaging or biopsy if needed to determine whether the retraction points to malignancy, postoperative change, or another process. Fat necrosis can sometimes involve skin changes, but it doesn’t capture the full clinical significance that retraction carries. Poor compression is not the typical cause of skin retraction and doesn’t explain the underlying implications.