ArticleJournal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine2026
Ultrasound-Guided Preoperative SAVI SCOUT Radar Reflector Localization of Soft Tissue Masses in the Musculoskeletal System: A Retrospective Case-Control Study of Operative Times and Reoperation Rates.
Article in Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesTo evaluate whether ultrasound-guided preoperative localization of soft tissue masses in the musculoskeletal system using a wireless radar reflector reduces operative times and reoperation rates compared to a control group referred by the same oncology team.
methodsRetrospective review of SAVI SCOUT radar localizations performed preoperatively for soft tissue masses between 2021 and 2025. All imaging, clinical details, and operative times were evaluated. Comparison was made between the localized group and a control group matched for demographics (age and sex), comorbidities (American Society of Anesthesiologists score), location (trunk versus appendicular; subcutaneous versus deep/subfascial), histopathology (benign versus malignant), and case complexity (primary closure versus flap reconstruction). Cases were performed by the same oncological surgical team referred directly or via the multidisciplinary tumor board during the same time course.
resultsTwenty-four radar localized cases were compared with 24 control cases. Median case time in the SAVI SCOUT group was 52.0 minutes (interquartile range 38.0) and there was no significant difference in case times between the localized and control groups (p > .05). There were no reoperations in the localized group whereas 5 patients in the non-localized control group underwent reoperation for positive margins, though this difference fell short of statistical significance (p = .056). The most common lesions in the localized group were metastatic melanoma (12.5%) and intramuscular myxoma (8.3%), liposarcoma (8.3%), and metastatic leiomyosarcoma (8.3%).
conclusionsPreoperative localization demonstrated no substantial improvement in operative time compared to the non-localized group. However, re-resection rates were higher in the non-localized group.
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