[Bladder augmentation and urinary diversion in kidney transplant candidates]

Kidney transplantation (KT) is the treatment of choice for patients with end stage renal disease (ESRD). 6% of the patients develop ESRD due to congenital or acquired lower urinary tract anomalies, which sometimes imply the need of an additional surgical procedure to make the patient suitable for transplantation.

We review 6 cases of KT receptors (three of them pediatric) to whom some kind of reconstruction of the lower urinary tract with bowel was performed over the last 10 years.

Most frequent etiologies: neurogenic bladder (3), small and contracted bladder after genitourinary tuberculosis, urethral valves, and transitional cell carcinoma with radical cystoprostatectomy and bilateral nephrectomy. Surgical techniques: Bladder augmentation with colon (3), Bricker's defunctionalized ileal loop (2), and Goodwin 's ileal bladder augmentation; all of them were performed between 8 and 147 months before transplant.

UTI in 2 patients. Recurrent stenosis of the ileal loop in one patient who required endoscopic balloon dilation and stent placement in the stenotic segment with poor results and finally requiring loop reconstruction. Another patient developed stenosis of the ureteroneocystostomy anastomosis and reimplant was performed. All of them had good outcome. One case had a subacute kidney rejection episode with good response to steroids. No graft was lost. Current serum creatinine values are between 0.69 and 2.6.

The use of bowel in patients with pathologic bladders is as safe method to allow these patients to receive a kidney transplant when bladder rehabilitation has not been possible with conservative measures.