[Imaging diagnosis and interventional therapy of transplant renal artery stenosis]

Abstract

Objective: To discuss the diagnostic methods of transplant renal artery stenosis (TRAS) and clinical outcome following percutaneous transluminal angioplasty.

Methods: Of 24 patients with TRAS screened by color Doppler ultrasound and confirmed with digital subtraction angiography, balloon angioplasty was performed in 19 patients, and 5 patients received stent implantation, including 2 cases of recurrent stenosis.

Results: Technical success was achieved in all procedures with no serious complications. The blood pressure and serum creatinine levels of all patients were remarkably decreased (P < 0.01). Renal functions of the two patients with restenosis were significantly improved after intra-arterial stenting.

Conclusions: Doppler ultrasonography is useful in the screening and follow-up of TRAS and arteriography is still the definite diagnostic method. Percutaneous transluminal angioplasty and stenting are safe and effective procedures to treat TRAS.