Biopsia mammaria stereotassica RM-guidata mediante sistema coassiale misto ferromagnetico-amagnetico con aghi da 12-18 Gauge: esperienza clinica e risultati a lungo termine

Translated title of the contribution: MR-guided stereotactic breast biopsy using a mixed ferromagnetic- nonmagnetic coaxial system with 12- to 18-gauge needles: Clinical experience and long-term outcome

Elena Belloni, Pietro Panizza, Silvia Ravelli, Francesco De Cobelli, Simone Gusmini, Claudio Losio, Isabella Sassi, Gianluca Perseghin, Alessandro Del Maschio

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: This study investigated the clinical application of a magnetic-resonance (MR)-guided breast biopsy (MRBB) system consisting of a nonmagnetic coaxial needle and a ferromagnetic core biopsy needle. Materials and methods: MRBB was performed on 70 breast lesions. The biopsy device consisted of a nonmagnetic 14- to 16-gauge coaxial needle and a ferromagnetic 16- to 18-gauge biopsy needle. Results: Of the 70 lesions, 29 were malignant and 41 nonmalignant. All 29 malignant lesions underwent surgery and were confirmed as malignant at final histology. Of the 41 nonmalignant lesions, 35 underwent follow-up breast MR imaging (mean, 26±19 months), which demonstrated no lesions changes; six lesions underwent surgery because of poor radiological-pathological correlation; of these 6 lesions, 3 were nonmalignant, one was borderline (lobular carcinoma in situ) and two were malignant (well-differentiated tubular carcinoma and infiltrating ductal carcinoma). Sensitivity, specificity, positive and negative predictive values and diagnostic accuracy were, respectively, 93.5%, 100%, 100%, 95.1% and 97.1% if the lobular carcinoma in situ was considered a nonmalignant histological result, and 90.6%, 100%, 100%, 92.7% and 95.7% if the lobular carcinoma in situ was considered malignant. Conclusions: MRBB with a ferromagnetic-nonmagnetic coaxial system represented an easy way to perform a biopsy procedure and was easily applicable in the routine clinical setting.

Translated title of the contributionMR-guided stereotactic breast biopsy using a mixed ferromagnetic- nonmagnetic coaxial system with 12- to 18-gauge needles: Clinical experience and long-term outcome
Original languageItalian
Pages (from-to)1137-1148
Number of pages12
JournalRadiologia Medica
Volume118
Issue number7
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Medicine(all)

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