%0 Case Reports %T Resection of primary left renal vein leiomyosarcoma with renal preservation following an unusual clinical presentation. %A Cholankeril TJ %A Lou J %A Spitz F %A Tjaden B %J BMJ Case Rep %V 17 %N 3 %D 2024 Mar 18 %M 38499354 暂无%R 10.1136/bcr-2023-254856 %X An elderly man was referred to vascular surgery on incidental discovery of a left retroperitoneal mass ultimately found to be of left renal vein (LRV) origin. He initially presented with recurring lower back pain. CT of the abdomen/pelvis showed a 6.0×5.5 cm lobulated retroperitoneal mass anterior to the infrarenal aorta. Resection of the mass necessitated a multidisciplinary team consisting of medical oncologists, radiation oncologists, urologists and vascular surgeons. In efforts to obtain an R0 margin, en-bloc resection of the LRV from its confluence with the inferior vena cava (IVC) was necessary. A primary repair of the IVC was performed with preservation of the left kidney. The patient's back pain has since resolved after the surgery. A literature search found IVC reconstructions to be safe and effective in the removal of vascular leiomyosarcomas.