Dislocability of Localization Devices for Nonpalpable Breast Lesions: Experimental Results

Abstract

Purpose. For accurate resection of nonpalpable malignant breast lesions with a tumor-free resection rim, an exact and stable wire localization is essential. We tested the resistance towards traction force of different localization devices used in our clinic for breast lesions in two types of tissue. Materials and Methods. Eight different commercially available hook-wire devices were examined for resistance towards traction force using an analogue spring scale. Results. Most systems showed a high level of movement already under small traction force. Retractable systems with round hooks such as the Bard DuaLok , the Fil d'Ariane, and the RPLN Breast Localization Device withstood less traction force than the other systems. However, the Bard DuaLok system was very resistant towards a small traction force of 50 g when compared to the other systems. The Ultrawire Breast Localization Device withstood the most traction force in softer tissue and Kopans Breast Lesion Localization Needle withstood the most force in harder tissue. Conclusion. The Ultrawire Breast Localization Device and Kopans Breast Lesion Localization Needle withstood the most traction force. In general retractable systems withstand less traction force than nonretractable systems.

Translating the 2‐dimensional mammogram into a 3‐dimensional breast: Identifying factors that influence the movement of pre‐operatively placed wire

“…Wire movement in relation to clips and hooks was previously shown to relate to density of the tissue . Kaul et al found similar results in human, turkey, and pork tissue when they studied the movement of various wires in tissues designed to simulate fatty and dense breast tissue . In our study, the wire tended to move out of the fatty breast.…”

“…1,5,6 Kaul et al found similar results in human, turkey, and pork tissue when they studied the movement of various wires in tissues designed to simulate fatty and dense breast tissue. 1 In our study, the wire tended to move out of the fatty breast. Wire movement is more likely in larger breasts, especially when the wire is placed from a medial direction.…”

“…Wire movement during image-guided lumpectomy has been reported, but there is scant information regarding what conditions produce the most movement. 1,2 It seems likely that the extent of movement might depend on a number of variables, such as lesion location, size and pathology, breast density, the size of the breast, the direction from which the wire was placed, and whether the lesion is closer to the front or the back of the breast. This study was designed to address these questions and to document the differences in preoperative measurements and the measurements obtained from the excised and x-rayed specimen.…”

Diagnostic Accuracy of Digital Mammography in the Detection of Breast Cancer

“…Overall, our results are in concordance with studies done in the past regarding the frequencies of different mammographic signs in the detection of breast carcinoma. Goedde et al, in his study, found that spiculated density was present in 44% cases, followed by clustered microcalcifications in 25%, mass in 22%, and asymmetric density in 14% of the cases [ 18 ].…”

Sono-mammography assisted wire guided localization of non- palpable breast lesions

“…Masroor, et al, 2012 (12) conducted WGL in 53% of the cases utilizing mammography guidance and 40% utilizing ultrasound guidance. Conversely, de Roos, et al, 2013 (13) reported that in their study, ultrasonography was used to aid localization in 72.6% of patients, mammography in 26.5%, and MRI in 0.9% of patients.…”