Stereotactic breast biopsy with a biopsy gun

Area of Science:

• Radiology
• Oncology
• Pathology

Background:

• Stereotactic breast biopsy is a minimally invasive diagnostic procedure.
• Accurate tissue sampling is crucial for diagnosing breast masses.

Purpose of the Study:

• To evaluate the diagnostic accuracy of stereotactic-guided automated percutaneous breast biopsy compared to surgical biopsy.
• To assess the impact of needle gauge and operator experience on biopsy concordance.

Main Methods:

• One hundred three patients underwent stereotactic breast biopsy using 18-, 16-, or 14-gauge needles and a biopsy gun.
• A localization wire was placed post-biopsy, followed by surgical biopsy for comparison.
• Histologic results from both procedures were compared for concordance.

Main Results:

• Overall agreement between stereotactic biopsy and surgical biopsy was 87% (89/103 cases), including 87% of cancers.
• The 14-gauge needle, used in the final 29 biopsies, achieved 97% agreement with surgical pathology.
• Four cancers were correctly diagnosed by gun biopsy but missed during surgical biopsy.

Conclusions:

• Stereotactic-guided large-gauge automated percutaneous biopsy demonstrates high concordance with surgical biopsy.
• The 14-gauge needle significantly improved diagnostic accuracy.
• This technique shows potential as an alternative to surgical biopsy for mammographically detected breast masses.