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Breast tissue markers are common in current clinical practice and are susceptible to migration. Herein, we present the case of a 47-year-old woman with invasive breast carcinoma diagnosed through ultrasound-guided core biopsy, who underwent placement of a breast marker (HydroMARK ® ) under ultrasound guidance 30 days after core biopsy and with subsequent marker migration to the nipple. The correct position of the marker was documented by mammography after its placement and by magnetic resonance imaging (MRI) after neoadjuvant chemotherapy. Migration of the marker to the nipple was evident only by mammography on the day of surgery. We hypothesized that an intraductal path was the route of marker migration in this patient. Marked ductal ectasia evident on MRI and histopathologic examination supported this hypothesis. To the best of our knowledge, this is the first published case of intraductal migration of a breast tissue marker.

Intraductal Migration of a Breast Tissue Marker Placed Under Ultrasound Guidance during COVID-Induced Delay of Surgery