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Acta Cirurgica Brasileira

Print version ISSN 0102-8650On-line version ISSN 1678-2674


COLOGNA, Adauto José et al. Urinary lithiasis in renal allografts. Acta Cir. Bras. [online]. 2003, vol.18, suppl.5, pp.43-44. ISSN 0102-8650.

Purpose: Urinary lithiasis is an uncommon complication in recipient of kidney allografts. The prevalence varies from 0.02 to 3.4%. The majority of calculi arises de novo in the recipient, however some of them are transferred with the transplanted kidney. The treatment relies on few reports published previously. The aim of the study is to determine the prevalence of lithiasis as well as the treatment in an university hospital. METHODS: We analyzed 953 recipients of renal transplant undertaken in Hospital das Clínicas - FMRP-USP, from February of 1968 to May of 2003. The mean age of patients bearing lithiasis was 47.2 years (range 35 to 63 years). RESULTS: The prevalence of lithiasis was 10/953 (1.0%). Nine patients received kidneys from cadaver donor and 1 from living donor. The diagnosis occurred during the surgery in 2 (20%), within few days after transplantation in 1 (10%) and in the late postoperative period in 7 (70%). Seven patients had no complains, 2 had associated urinary tract infection and 1 a rise in serum creatinine. Of 8 cases with lithiasis in the postoperative period, the stones were localized in the kidney in 6 and in the ureter in 2. Renal calculi were managed as follows: watchful-waiting - 2, extracorporeal lithotrypsy - 2, percutaneous nepholithotrypsy - 1 and open pyelolithomy - 1. One patient with ureteric lithiasis associated ureteral stenosis underwent a pyelo-vesicostomy. The other patient with ureteric lithiasis was treated by retrograde endoscopic ureterolithothrypsy. CONCLUSION: Urinary lithiasis is rare in transplanted kidneys and can be managed as to the general population.

Keywords : Renal allograft; Lithiasis.

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