The aim of this study was to analyze the status of patients with a successf
ul long-term (greater than or equal to 20 yr) kidney graft. Nineteen (8.1%)
of the 234 recipients who received a cadaveric kidney transplant between 1
968 and 1978 in our center are still alive 21.7 +/- 1.6 yr (mean +/- standa
rd error of the mean) later with a functioning allograft. Function, includi
ng measurement of the renal functional reserve (RFR), histological status,
and morbidity were evaluated.
Fourteen patients agreed to participate in this study. Their current immuno
suppressive regimens combined prednisone (P) + azathioprine (AZA) (n = 9),
P + AZA + cyclosporine (CsA) (n = 3) or P + CsA (n = 2). Although they desc
ribed their quality of life as good, 10 patients had mild hypertension, 5 d
eveloped 10 malignancies (9 cutaneous), 5 had replicative hepatitis, 8 had
osteopenia, and 6 had cataracts, but none had diabetes mellitus. Proteinuri
a was detected in 6 patients, but was always less than 1 g/d. Mean serum cr
eatinine was 1.28 +/- 0.28 mg/dL and glomerular filtration rate was 54.5 +/
- 5.3 ml/min/1.73 m(2) RFR was present for 4 patients with a mean value of
+ 14.8 +/- 1.9 mL/min. Their functional status was not correlated with the
histological lesions observed in concomitant transplant biopsies.
Kidney grafts are able to function well even more than 20 yr posttransplant
ation, with some having a RFR whose significance remains unknown. Morbidity
is of minor clinical severity, but could be further reduced with optimized
management. Moreover, transplantation is much less costly than hemodialysi
s.