The interaction term addressing the combination of VUC and pathologic tumor grade on RFS, CSS, and OS failed to reach statistical significance ( p = 0.35, 0.23, and 0.26, data not shown), indicating that the risk associated with the presence of VUC and tumor grade did not appear to exceed the additive contribution of these risk variables.
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Preoperative positive voided urine cytology predicts poor clinical outcomes in patients with upper tract urothelial carcinoma undergoing nephroureterectomy.
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