Robotic resection of left renal vein with preservation of left kidney for leiomyosarcoma: Case report and review of the literature.

INTRODUCTION: Radical surgical resection with negative margins is the mainstay of treatment for retroperitoneal vascular leiomyosarcomas. Given the retroperitoneal location of these tumors, open surgery is, historically, the chosen surgical approach, however, it is burdened with high postoperative morbidity. In selected cases, the small dimension of the tumor and a favorable location, allow to perform a minimally invasive treatment.

PRESENTATION OF CASE: A 67-year-old female patient with a diagnosis of a leiomyosarcoma arising from the left renal vein underwent a robotic resection of the left renal vein with preservation of the left kidney and a relative outflow trough the gonadal vessels. The patient was discharged on the fourth postoperative day without any complications and there was no tumor recurrence noted during the 24-month follow-up period.

DISCUSSION: Vascular retroperitoneal leiomyosarcomas are very rare tumors requiring a complete en bloc gross tumor resection in order to achieving microscopically negative margins on the vein of origin. Thanks to the preoperative histological diagnosis and radiological study of the neoplasm, it was possible to proceed to a highly personalized and minimally invasive treatment with respect of oncological criteria.

CONCLUSION: In selected cases, a minimally invasive surgery of vascular leiomyosarcoma could be a feasible and safe treatment option.