Large Retroperitoneal Lymphadenopathy As a Predictor of Venous Thromboembolism in Patients With Disseminated Germ Cell Tumors Treated With Chemotherapy
2015
Purpose Cisplatin-based chemotherapy, a mainstay of treatment for disseminated germ cell tumors (GCTs), is associated with venous thromboembolism (VTE). Many patients with disseminated GCTs have large retroperitoneal lymph node (RPLN) metastases that may cause venous stasis and increase the risk of VTE development. We hypothesized that there was an association between large RPLN and chemotherapy-associated VTE risk. Patients and Methods The training cohort was composed of patients with disseminated GCT receiving first-line chemotherapy at Princess Margaret Cancer Centre between January 2000 and December 2010. Large RPLN was defined as more than 5 cm in maximal axial diameter. The predictive and discriminatory accuracies of a model using large RPLN in predicting VTE were compared with high-risk Khorana score (≥ 3) using logistic regression and area under receiver operator characteristic curves (AUROCs). The model was externally validated in a cohort of patients treated at the London Health Sciences Centre....
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