Bleeding, hematoma and scar-formation after vacuum-biopsy under stereotactic guidance: MammotomeR-system 11G/8G vs. ATECR-system 12G/9G

Purpose: To evaluate the correlation of scar-formations after vacuum-assisted biopsy (VAB) with different VAB-systems and needle-sizes and peri-interventional bleeding/hematoma Methods and Materials: Between 01/2008–12/2009, 479 patients underwent VAB under stereotactic-guidance, using the MammotomeR-system with 11/8-gauge and ATECR-system with 12/9-gauge, whereas in 178 cases with representative benign histology no surgical-biopsy after VAB was performed and at least a 2-plane-follow-up-mammogram after 6 month post-VAB was available. Bleeding during intervention, hematoma post-intervention and scar-tissue was scored as minimal and moderate/severe. Statistical analysis included Chi-Square-trend-test, p-value <0.05 was considered to be significant. Results: Significantly more small/moderate bleedings/post-interventional hematomas for 8-gauge-MammotomeR-system vs. 11-gauge-MammotomeR-system (41.9% vs. 8.4%, p<0.001/p=0.029), no significant-differences for the ATEC-systems (26.9% vs. 29.9%, p=0.799/p=0.596). 11-gauge-MammotomeR-system vs. ATECR-12-gauge-system revealed significantly less bleedings/hematomas (8.4% vs. 29.7%, p=0.015/p=0.001), no significant differences for the large-systems (p=0.135/p=0.352). Follow-up of MammotomeR-11/8-gauge-system system has shown 13.1%/16.1% minimal scar-formation and 1.2%/3.2% moderate/severe scars, whereas ATECR-12/9-gauge-system has shown 10.8%/3.8% minimal scar-formation and 0%/11.5% moderate/severe scars, no significant differences. No significant difference comparing MammotomeR-11/8-g-systems vs. ATECR-12/9-g-systems (p=0.609/p=0.823). Conclusion: Using larger needle-sizes significantly (MammotomeR)/not significant for ATECR) more bleedings and post-interventional-hematomas were detected, only a tendency concerning scar-formation.

Keywords: vacuum-biopsy, scar-formation, bleeding, hematoma

Korrespondierender Autor: Neelsen J

UKSH Campus Kiel Klinik für Gynäkologie und Geburtshilfe, Mammazentrum, Arnold Heler Strasse 3, 24105 Kiel

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