Background The incidence, time of onset, and outcome of transplant renal ar
tery stenosis (TRAS) in pediatric en bloc (PT) and adult single-kidney (AT)
transplants were reviewed.
Methods. Forty-three cases (7 PT and 36 AT) of suspected TRAS were selected
out of 367 functioning grafts (35 of them PT). Diagnosis was performed by
digital subtraction arteriography. Percutaneous transluminal angioplasty (P
TA) was performed when needed.
Results. Seven (20%) PT and 24 (7.1%) AT presented TRAS. Time of onset was
7+/-1 months in PT and 18+/-17 months in AT (P<0.05). PT,4 was performed in
all cases of TRAS in PT and in 19 AT. One PT and 7 AT had re-stenosis. The
re was no significant difference in renal function after treatment. Control
of blood pressure improved in both groups.
Conclusions. Recipients of PT grafts showed a higher incidence and earlier
onset of TRAS. Re-stenosis was more frequent in AT.