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Objective To develop and evaluate a radiomics nomogram for differentiating the malignant risk of gastrointestinal stromal tumours (GISTs). Methods A total of 222 patients (primary cohort: n = 130, our centre; external validation cohort: n = 92, two other centres) with pathologically diagnosed GISTs were enrolled. A Relief algorithm was used to select the feature subset with the best distinguishing...
•Elderly patients are more likely to present with renal impairment and to develop contrast-induced nephropathy, which limits the use of CTPA.•With high false positive rate, the diagnostic accuracy of the Wells score or D-dimer test alone is unsatisfactory.•The combination of using the Wells score and D-dimer test is as effective as other complex diagnostic strategies in the evaluation and management...
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