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Utility of Preoperative Positron Emission Tomography (PET) in Localizing Perforator Vessels of Anterolateral Thigh Free Flap

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第4期13卷 275-284页

作者： alexandra McMillan Sameer A. alvi zaid al-qurayshi Zachary Fleishacker Nitin A. Pagedar Marisa R. Buchakjian Department of Otolaryngology University of Iowa Hospitals and Clinics Iowa City IA USA Division of Otolaryngology-Head & Neck Surgery North Shore University Health System Evanston IL USA Pritzker School of Medicine The University of Chicago Chicago IL USA Holden Comprehensive Cancer Center University of Iowa Iowa City IA USA

Objectives: The anterolateral thigh (alT) flap is often considered the workhorse in soft tissue reconstruction of head and neck defects secondary to trauma, infection, or tumor resection. Despite its many advantages, alT flaps have been criticized due to variability in vasculature, which may result in inadequate or non-existent perforators. This retrospective study aims to investigate the utility and validity of positron emission tomography (PET) scan to identify the location and characteristics of perforators to the alT flap. Methods: We performed a 10-year retrospective review of alT flaps at our institution to identify patients with preoperative PET scans available for analysis. Three reviewers (attending physician, fellow, and resident) were asked to identify the number, location, and characteristics (myocutaneous versus septocutaneous) of alT perforators on imaging, and reviewer agreement was assessed. Results were then compared to available operative data. Results: One hundred twenty-one patients were identified who underwent alT free flap surgery. Thirty-eight preoperative PET scans were identified for review. At least one perforator was identified in 92.1% of scans. Agreement percentages regarding the number of perforators ranged from 53% - 61% whereas agreement regarding the location of a single perforator ranged from 79% - 90%. However, reviewers did not agree regarding the type of perforator, with agreement ranging from 34% - 53%. Poor agreement was observed when compared to intraoperative data, with the number of perforators ranging from 26% - 34% and the type of perforator 11% - 24%. These findings are likely due to insufficient data available in operative reports. Conclusion: although initial studies suggest that PET scan shows promising evidence to support the capacity to preoperatively identify alT perforators, future prospective studies are warranted to fully validate these findings.

关键词： Anterolateral Thigh Flaps Positron Emission Tomography Head and Neck Defects Perforator Mapping

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Utility of Preoperative Positron Emission Tomography (PET) in Localizing Perforator Vessels of Anterolateral Thigh Free Flap

引用

International Journal of Otolaryngology and Head & Neck Surgery（耳鼻喉） 2024年第4期 275页

作者： alexandra McMillan Sameer A. alvi zaid al-qurayshi Zachary Fleishacker Nitin A. Pagedar Marisa R. Buchakjian

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