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Article Abstract
Objectives: To develop and validate a nomogram to predict survival in patients with recurrent nasopharyngeal carcinoma (NPC) after salvage endoscopic surgery.
Materials And Methods: A total of 229 eligible patients with recurrent NPC were divided into training (n = 115) and validation (n = 114) cohorts. A multivariate Cox proportional risk regression model was used to identify significant prognostic factors for overall survival (OS) in the training cohort. A nomogram was then developed based on the regression model. The performance of the nomogram was assessed with regard to discrimination and calibration. Patients were divided into low-risk or high-risk groups based on the risk scores derived from the nomogram. Furthermore, decision curve analysis (DCA) was used to assess the clinical utility of the nomogram.
Results: Six significant predictors were identified: diabetes mellitus, body mass index (BMI), neutrophil-to-lymphocyte ratio (NLR), T stage, lymph node metastasis, and tumor necrosis. The nomogram incorporating these six predictors demonstrated favorable discrimination and calibration in the training cohort, with a C-index of 0.746 (95% confidence interval [CI] 0.656-0.836), which was subsequently confirmed in the validation cohort (C-index 0.768 [95% CI 0.675-0.861]). Furthermore, the nomogram successfully distinguished patients into low- and high-risk groups. DCA indicated that the nomogram was clinically useful.
Conclusions: The novel nomogram demonstrated its potential as an individual tool to predict survival in patients with recurrent NPC after salvage endoscopic surgery.
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| http://dx.doi.org/10.1016/j.oraloncology.2020.104922 | DOI Listing |
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