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. 2021 Aug 19;13(16):4167. doi: 10.3390/cancers13164167

Figure 3.

Figure 3

Sonographically visible HydroMARK clip. (A) Image showing cylinder shaped HydroMARK clip pre (small cylinder) and post (clear cylinder) absorption of water. (B) Transverse sonographic image of HydroMARK clip in the abnormal axillary lymph node. Typical sonographic view of HydroMark marker in the days following its implantation. From Woods et al. [33]. A review of options for localization of axillary lymph nodes in the treatment of invasive breast cancer. Acad. Radiol. 2019, 26, 805–819 (Copyright obtained from the Rightslink Copyright Clearance Center under license number 4956080252494). (C) Sonographically visible Twirl marker, demonstrating clip with twinkle artifact within lymph node. (D) Presence of Twirl clip in left axillary node on mammogram. From Tan et al. [34]. The ‘twinkle’ artifact- a novel method of clip identification to facilitate targeted axillary surgery following neoadjuvant chemotherapy in breast cancer patients. Clin. Imaging 2020, 68, 36–44. (Copyright obtained from the Rightslink Copyright Clearance Center under license number 5087861367522).