523 Impact of lymph node dissection at the time of radical nephrectomy and tumour thrombectomy on oncological outcomes of patients with renal cell carcinoma and tumour thrombus. - Tilki, D.; Terrone, C.; Chandrasekar, T.; Ciancio, G.; Daneshmand, S.; Martinez-Salamanca, J.; Montorsi, F.; Rodriguez-Faba, O.; Zigeuner, R.; Libertino, J.; Evans, C. (European Urology Supplements, 2016)