Inferior vena cava involvement in children with Wilms tumor.

Objectives: Retrospective review of children with WT thrombus involving the IVC.

Methods: We reviewed the charts of 123 patients with WT diagnosed between January 2006 and December 2015. Patients with caval tumor thrombus were identified, demographic data, radiological images, extent of thrombus, chemo- and radiotherapy, surgical approach, pathology reports and outcomes were analyzed.