Ureteral metastasis from renal adenocarcinoma

Ureteral and renal pelvic metastases from renal cell carcinoma

Six patients with ureteral or renal pelvic metastases from renal cell carcinoma (RCC) were studied radiologically. Correlation with surgical and histologic findings confirmed renal venous involvement in 5 and lymphatic invasion in 3 patients. The possible role of nephroureterectomy or secondary ureterectomy in patients with RCC is discussed in the background of our cases, as are prior reports of this finding.

Ureteral stump metastases from renal adenocarcinoma

The thirty-second documented case of ureteral stump metastasis from renal adenocarcinoma is presented. It demonstrates well the variable and often unusual presentation of renal adenocarcinoma and the utility of our current diagnostic instrumentation (here ureteroscopy and skinny needle biopsy) in documenting metastatic disease. Also, and in contrast to prior reports, it documents lengthy survival and a lack of extensive metastases in this high risk group of patients. The literature is reviewed and the presentation, metastatic pathways, and management of ureteral stump metastases from renal adenocarcinoma are briefly discussed.

Renal adenocarcinoma metastasizing to contralateral renal pelvis

Ureteric metastases from renal adenocarcinoma are uncommon and occur predominantly in the residual ipsilateral ureteric stump. We report on a patient with renal adenocarcinoma metastasizing to the contralateral renal pelvis and the clinical problems involved.

Hypernephroma and associated ureteral involvement

The propensity of a hypernephroma to invade the renal vein and even the inferior vena cava is widely known. However, in contrast to papillary carcinoma of the kidney, hypernephromas rarely involve the ureter. Review of the English literature reveals 42 reported cases of ureteral involvement. Most represented metastases as opposed to direct, contiguous extension which is extremely rare. C case of hypernephroma with contiguous castlike extension into the ureter without mucosal violation is presented. Mechanisms of ureteral involvement and implications regarding treatment of hypernephromas are discussed.