511 Background: Local recurrence after radical nephrectomy in renal cell carcinoma occurs in about 2-4% of the patients. An isolated intracaval thrombus is described in only very few cases. We report about our experience in the diagnosis and theapy of this random entity. Methods: 5 patients (2f, 3m) were referred to our institution with the diagnosis of an IVC thrombus recurrence. All patients had underwent a radical nephrectomy 1-9 years before the relapse. In 3 patients, the thrombus was diagnosed within the routine follow up, another 2 presented with swelling/deep vein thrombosis. The staging showed no other metastases. Results: The mean patient age at time of diagnosis was 73.8 (70-81) years. 2 patients presented with a level II thrombus, 2 with level III and one with a level IV thrombus. We could resect the thrombus completely in 4 cases and close the cava with a running suture. In one case we had to resect the inferior vena cava completely and replace it with a gortex prosthesis. The mean blood loss was 1.7 (0-8) liters at an operating time of 5.5 (4.3-7.6) hours. The mean follow up was 3.5 (0.5-8) years, until today occured one case of pulmonal metastatic disease. Significant perioperative complications classified after Clavien-Dindo occured in one case with an intraoperative bleeding and rupture oft he spleen that required a mass-transfusion. Conclusions: Although it is a technical demanding procedure, the surgical resection of a recurrent vena cava thrombus is the method of choice with only a little perioperative morbidity and high oncological effectivity. This random type of recurrent disease illustrates the importance of an adequate primary therapy as well as a regularly follow up after cava-involvement.
V10-07 ROBOTIC ASSISTED LAPAROSCOPIC RIGHT RADICAL NEPHRECTOMY WITH INFERIOR VENA CAVA THROMBECTOMY AND LIVER RESECTION FOR PT4 RENAL CELL CARCINOMA
