Ra. Lopezmartinez et al., THE USE OF METALLIC STENTS TO BYPASS URETERAL STRICTURES SECONDARY TOMETASTATIC PROSTATE-CANCER - EXPERIENCE WITH 8 PATIENTS, The Journal of urology, 158(1), 1997, pp. 50-53
Purpose: We evaluated the middle term patency, incidence of infection
and ability to preserve renal function using metallic stents to bypass
ureteral obstruction secondary to metastatic prostate adenocarcinoma.
Materials and Methods: We studied 8 patients with ureteral obstructio
n secondary to metastatic prostate adenocarcinoma at the pelvic ureter
with up to 48 months of followup. Metallic Wallstents 8 mm. in diame
ter and 64 mm. long were placed across the stricture after preliminary
dilation with a high pressure balloon. Double-J dagger catheters were
left in all patients for at least 1 month or until mucosal edema had
subsided. All stents were placed via an antegrade approach. Results: A
verage duration of stent patency was 19 months. All 6 patients at risk
at 12 months had patent stents compared to 3 of 5 at 24 months, 2 of
2 at 36 months, and 1 of 1 at 48 months. Stent occlusion occurred in 2
patients at 8 and 12 months, respectively, and additional stents were
placed telescopically to achieve recanalization. Renal function was p
reserved in all patients. Two patients died of disease at 1 month and
1 at 26 months after stent placement. Conclusions: The use of metallic
stents to bypass malignant ureteral obstruction is a safe and effecti
ve method.