What's the best way to differentiate ureteral tumor?

summary

Ureteral stricture is characterized by lumbago and hydronephrosis, which should be differentiated from urothelial carcinoma. The causes of ureteral stricture are various. Non tumor ureteral stricture has no history of hematuria. Urography shows simple stricture without filling defect. No tumor cells were found in repeated urine. What's the best way to differentiate ureteral tumor?

What's the best way to differentiate ureteral tumor?

Ureterolithiasis ureterolithiasis can cause upper urinary tract obstruction. When it is negative, urography can find filling defect in ureter, which needs to be differentiated from ureteral tumor. Ureteral calculi are more common in young adults under 40 years old, characterized by colic, gross hematuria is rare, mostly intermittent microscopic hematuria, often coexisting with renal colic. On retrograde ureterography, the ureteral tumor was dilated locally and showed cupping like changes, while the stones were not. On plain CT scan, the stone showed high density shadow, and the tumor showed soft tissue shadow.

Ureteral stricture is characterized by lumbago and hydronephrosis, which should be differentiated from urothelial carcinoma. The causes of ureteral stricture are various. Non tumor ureteral stricture has no history of hematuria. Urography shows simple stricture without filling defect. No tumor cells were found in repeated urine.

Ureteral polyps are more common in young adults under 40 years old, with a long history of disease and no obvious blood coat. Filling defect can be seen by ureterography, but the surface is smooth and long strip, and the scope is larger than that of ureteral tumor, mostly more than 2cm. Most of the tumors were located near the junction of ureteropelvic and ureterovesical.

matters needing attention

Regular examination of urine routine and urine exfoliated cells; Regular review of intravenous urography or retrograde Pyeloureterography; Cystoscopy and ureteroscopy were performed regularly for the first 2 years, every 3 months, and then every 6 months; Mitomycin or BCG and other chemotherapeutic drugs were used for regular intravesical instillation to prevent tumor recurrence.