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Experiences of renal transplants from donors with renal cell carcinoma after ex vivo partial nephrectomy

  • Lim, Sung Yoon (Department of Internal Medicine, Korea University Medical College) ;
  • Kim, Myung Gyu (Department of Internal Medicine, Korea University Medical College) ;
  • Park, Kwon Tae (Department of Surgery, Korea University Medical College) ;
  • Jung, Cheol Woong (Department of Surgery, Korea University Medical College)
  • Received : 2016.09.22
  • Accepted : 2016.11.29
  • Published : 2017.05.01

Abstract

Purpose: Routine evaluation of kidney donors occasionally reveals an incidental renal mass with an otherwise satisfactory kidney function. The use of such a kidney with an enhancing mass for transplantation is a matter of debate owing to a possible risk of transmission of donor malignancies. We report our experience of kidney transplants from donors with renal cell carcinoma, after ex vivo resection of the renal mass. Methods: Two women aged 44 and 56 years were diagnosed with enhancing renal masses measuring 0.9 cm and 0.7 cm, respectively, during donor evaluation for kidney transplantation. Both patients and their families were informed of a potential risk of recurrent renal cell carcinoma following transplantation. Results: Renal function test results of both donors satisfied the living donor selection criteria. Laparoscopic live donor nephrectomy was performed with ex vivo resection of renal masses on the bench table. Immediate pathological analysis revealed a renal cell carcinoma with a margin of normal renal parenchyma before transplantation. Regimens based on mammalian target of rapamycin inhibitors, which are known for their antitumoral properties, were used for immunosuppression in both recipients. None of the recipients showed recurrence or metastasis during the follow-up period, which was longer than 3 years after transplantation. Conclusion: In light of the ongoing shortage of kidney donors, kidneys with small renal cell carcinoma could be considered for transplantation after appropriate removal of the lesion, with a very low risk of recurrent disease.

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