Digital Atlas of Breast Pathology by Meenakshi Singh, MD - Department of Pathology, Stony Brook University Medical Center

Collagen Plug Inside Biopsy Cavity, High Power
Collagen plug placed inside biopsy cavity at the time of procedure should not be mistaken as an area of necrosis (high power). Collagen plugs are sonagraphically visible. Future localization can be performed with sonography rather than mammography.

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