Initial Clinical Experience With an Inducible Magnetic Seed System for Preoperative Breast Lesion Localization

Abstract

All of the 73 seeds placed in the first 4 months of clinical use were successfully placed and all were successfully retrieved intraoperatively. The mean time from seed placement to surgery was 3 days. Early clinical experience suggests that Magseed is an effective and accurate means of preoperative breast lesion localization.

Tissue marker migration after MRI‐guided breast biopsy: Migration frequency and associated factors

“…Newer localization technologies are available, such as radioactive seeds, reflector‐guided localization, and magnetic seeds. These devices range in size from 4.5 to 12 mm . Studies show positive margins for reflector and radioactive seed systems of 7%‐8% when the localization device was ≤1 cm from the target .…”

“…These devices range in size from 4.5 to 12 mm . Studies show positive margins for reflector and radioactive seed systems of 7%‐8% when the localization device was ≤1 cm from the target . Caution should be exercised when placing these devices >1 cm from the target biopsy site, in cases of clip migration .…”

“…[12][13][14] Studies show positive margins for reflector and radioactive seed systems of 7%-8% when the localization device was ≤1 cm from the target. [13][14][15] Caution should be exercised when placing these devices >1 cm from the target biopsy site, in cases of clip migration. 13 Additionally, the presence of post-biopsy hematoma may obscure the percutaneous signal of these localization devices or result in migration of the device.…”

Simultaneous Use of Magnetic Method in Localization of Impalpable Breast Cancer and Sentinel Lymph Nodes Detection: Initial Experience

“…Magseed, a small marker containing SPIO nanoparticles has been used for localization of impalpable breast lesions. Harvey et al [9] and Price et al [10] published recently their initial clinical experience with this method. Both studies conclude that Magseed is an effective and accurate means of preoperative breast lesion localization.…”

“…Recently, another possibility has been presented for the use of magnetism in breast surgery. Magseed R , a 5.0 × 1.0 mm medical grade stainless steel -low nickel seed with magnetic detection property, was used as an alternative method for preoperative localization of impalpable breast cancer [9,10]. The seed is detectable using the Sentimag probe in the same way as the Sienna+ tracer in SLNs.…”