Abstract
Adenocarcinoma of the renal pelvis is so rare that many reviews of renal tumours fail to include any instance of this lesion. We present a 75-year-old female patient with no previous history of urological disease in whom a renal pelvic tumour was diagnosed. Histological examination after radical nephroureterectomy proved the tumour to be a rare adenocarcinoma. The course of the disease, the possible predisposing factors, the treatment of the tumour and the prognosis are discussed.