ArticleWorld journal of surgical oncology2025
Individualized prediction of stent patency in malignant colonic obstruction: development and validation of a prognostic model.
Article in World journal of surgical oncology, 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
purposeTo develop and validate a predictive model for stent patency following a palliative self-expandable metallic stent (SEMS) for primary malignant colonic obstruction.
methodsPatients with primary malignant colonic obstruction who underwent SEMS treatment were included in this study. One retrospective set (N = 121) was used to develop and validate the predictive model. The clinical features were collected and subjected to Cox regression analyses. The final predictive model was displayed as a nomogram, which was validated in an independent set (N = 36).
resultsThe clinical prognostic model was composed of pre-chemotherapy (P < 0.001), time of obstruction (P = 0.005), and post-chemotherapy (P < 0.001). The time-dependent area under the curve were 0.898 at 30-day, 0.778 at 90-day, 0.728 at 180-day, and 0.844 at 360-day in the training set; and 0.654 at 30-day, 0.745 at 90-day, 0.777 at 180-day, and 0.740 at 360-day in the validation set. Moreover, this easy-to-use and individualized nomogram was exclusively applied to predict stent patency and showed a favorable prognostic performance in the training and validation sets.
conclusionThe nomogram developed in this study accurately predicts stent patency and shows promise for personalized SEMS management. However, external validation must be prioritized before clinical implementation to ensure generalizability and safety.
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