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Metallic clip deployment during stereotactic breast biopsy: retrospective analysis
1Department of Radiology, Duke University Medical Center, Box 3808, Hospital South, Rm 24254, Durham, NC 27710, USA. rosen017@mc.duke.edu
Radiology
|February 13, 2001
Summary
Metallic clips used in breast biopsies may not accurately mark the biopsy site, potentially complicating future procedures. Post-biopsy mammograms in two planes are recommended to ensure correct clip placement for lesion excision.
Area of Science:
- Radiology
- Breast Imaging
- Surgical Pathology
Background:
- Metallic clips are used to mark biopsy sites for subsequent lesion excision.
- Accurate clip placement is crucial for guiding surgical removal and potential re-biopsy.
Purpose of the Study:
- To assess the visibility of excised lesions on post-biopsy mammograms.
- To evaluate the accuracy of metallic clip placement relative to the biopsy target.
Main Methods:
- Review of 111 core-needle biopsy cases with clip deployment.
- Measurement of clip distance to the biopsy site on pre- and post-biopsy mammograms.
- Assessment of targeted lesion visibility on post-biopsy images.
Main Results:
- Clips were within 5 mm of the target in 56% of cases.
- 28% of clips were over 1 cm from the target on at least one view.
- In cases requiring excision, 46% had clips at least 1 cm from the lesion.
Conclusions:
- Metallic clip placement during stereotactic core-needle biopsy may significantly deviate from the actual biopsy site.
- Post-biopsy mammography in orthogonal planes is essential to verify clip position relative to the target.
- Inaccurate clip placement can impact the effectiveness of lesion marking for excision.