ArticleCureus2025
Advanced Age as a Predictor of Unsuccessful Bilateral Sentinel Lymph Node Detection Using Radiocolloid Mapping in Patients With Endometrial Cancer: A Prospective Observational Study.
Article in Cureus, 2025. 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
objectiveTo identify clinical and pathological factors associated with unsuccessful bilateral sentinel lymph node (SLN) detection using the technetium-99m-labeled phytate radiocolloid method (RI method) in patients with endometrial cancer.
methodsThis prospective observational study included 223 patients with histologically confirmed presumed early-stage endometrial cancer who underwent SLN mapping between July 2018 and May 2022 at Kagoshima University Hospital. A radiocolloid tracer was injected into the cervix the day before surgery, followed by preoperative single-photon emission computed tomography combined with computed tomography imaging. The SLNs were intraoperatively localized using a gamma probe and assessed via frozen sections or one-step nucleic acid amplification. Bilateral SLN detection was defined as successful localization of at least one SLN in each hemipelvis. Multivariate logistic regression was used to identify the independent predictors of detection failure.
resultsThe overall bilateral SLN detection rate was 83.4% (186/223). In the univariate analysis, advanced age (median 63.0 vs. 58.0 years, p = 0.0003) and myometrial invasion ≥50% (p = 0.0289) were associated with unsuccessful detection. In the multivariate analysis, age was a significant independent predictor (OR = 1.057, 95% CI: 1.017-1.099, p = 0.0037), whereas other variables, including body mass index, histological type, lymphovascular space invasion, and cervical stromal invasion, were not.
conclusionsAdvanced age significantly increased the risk of unsuccessful bilateral SLN detection using the RI method for endometrial cancer. These findings emphasize the need for individualized surgical planning in older patients, including preoperative counseling and consideration of adjunctive strategies to improve detection rates, particularly in cases in which alternative tracers, such as indocyanine green, are not reimbursed.
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