Highlights
- •Pre-operative radioseed localizations can be performed using a digital breast tomosynthesis guided method.
- •Preliminary data suggest DBT-guided preoperative radioseed localization has statistically significant time and dose savings compared to traditional stereotactic radioseed localization.
- •No significant difference in margin outcomes for patients undergoing DBT-guided preoperative seed localization compared to 2D radioseed localization.
Abstract
Purpose
To compare single seed digital breast tomosynthesis-guided radioseed localization
(DBT-L) to standard 2D stereotactic-guided radioseed localization (SGL) of the breast.
Methods
A retrospective review of a large tertiary cancer center's database yielded 68 women
who underwent preoperative DBT-L from March 2019–December 2019 and a matched cohort
of 65 women who underwent SGL during the same period. The electronic medical record
and radiology were reviewed for patient characteristics including breast density,
exam technique, pre- and post-operative pathology, exam duration, and radiation dose
to the patient. To compare margin outcomes between the groups, the chi-square test
of independence was used; to compare continuous outcomes such as exam duration and
total dose, the Wilcoxon rank sum test was used.
Results
DBT-L and SGL localization targets included biopsy marker (62/68, 91% vs 55/65, 85%),
distortion (4/68, 6% vs 2/65, <3%), focal asymmetry (1/68 and 1/65, < 2% for both),
calcifications (1/68, <2% vs 4/65, 6%), and anatomic landmarks (0% vs 3/65, 5%). 72%
and 71% of localizations were performed for malignant pathology in the DBT-L and SGL
groups, respectively. The median duration of DBT-L was 8.3 min vs 10.3 min for SGL,
representing statistically significant time savings (p = 0.003). The median total organ dose of DBT-L was 8.6 mGy vs 10.4 mGy for SGL, representing
statistically significant dose savings (p = 0.018). The incidence of positive margins at surgery was not statistically different
between the groups (p = 0.26).
Conclusion
DBT-L demonstrates both time and dose savings for the patient compared to SGL without
compromising surgical outcome.
Keywords
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Article info
Publication history
Accepted:
December 27,
2022
Received in revised form:
December 20,
2022
Received:
August 5,
2022
Publication stage
In Press Journal Pre-ProofIdentification
Copyright
© 2023 Elsevier Inc. All rights reserved.
