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Hookwire Localisation

A very small lesion in the breast detected on a screening mammogram or ultrasound that requires surgical removal and cannot be felt by the surgeon may require a hookwire localisation. In order for this type of lesion to be removed, it needs to be marked for the surgeon to be able to locate it during the operation.


  • A small stainless steel wire is placed within the breast tissue to mark the lesion for the surgeon to remove.
  • The procedure is performed either under mammographic (stereotactic) or ultrasound control to place the hookwire immediately adjacent to the abnormality.
  • This procedure is usually performed a few hours prior to surgery.
  • Following the removal of the abnormality, the tissue removed is x-rayed to confirm the abnormality was removed at the time of surgery. These x-rays are compared with the original mammogram and/or ultrasound images.
  • The tissue specimen is sent to the pathologist for detailed pathology analysis.


A hookwire procedure take approximately 1 hour.

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