Abstract

The main indication for kidney autotransplantation is ureteric disease, although it is also performed to treat renovascular diseases or neoplasms, such as complex intrasinusal kidney tumors or in patients with a solitary kidney. Only a few cases of kidney autotransplantation in the context of resectionof complex retroperitoneal masses have been reported in the literature. CASE PRESENTATION: We report the case of a 26-year-old man with history of nonseminomatous germ cell tumor who had undergone a left radical orchiectomy 3 months earlier. Follow-up computed tomography revealed a residual retroperitoneal postchemotherapy mass involving the renal hilum. It was surgically removed via en bloc resection and benchex vivo nephron-sparingsurgery,and subsequently autotransplantation, therebyavoidingthe necessity of nephrectomy and the resulting risk of chronic kidney disease. The pathology of the excised specimen demonstrated mixed germ cell tumor, composed of immature teratoma and yolk sac tumor, and confirmed tumor-free margins. CONCLUSIONS: This technique should be taken into account in selected patients as an alternative to radical nephrectomy when a retroperitoneal tumor is unresectable using standard surgical techniques or when a radical nephrectomy is considered, especially in patients with chronic kidney disease or solitary kidney, or in young patients who will potentially need nephrotoxic chemotherapy.

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