Multiple simultaneous bilateral urothelial tumours of the renal pelvis.

Three cases of simultaneous bilateral transitional cell carcinoma of the renal pelvis are reported. In one case the bladder and urethra were also involved. The information provided by radiological studies (particularly renal angiography) and cytology allowed us to define with accuracy not only tumour sites but also the tumour itself and the degree of malignancy. Based on the latter finding, the surgical approach was adapted to each individual case and consisted of papillectomy, partial pyelectomy or heminephrectomy associated with contralateral nephroureterectomy. In one case total cystourethrectomy was performed. Long-term follow-up showed no recurrence in the residual urinary tract 5 to 8 years post-operatively.