Ureteral metastasis from gastric cancer is rare. It is usually diagnosed in the setting of an advanced gastric cancer or on postmortem examination. Isolated ureteral metastasis without involvement of other sites is extremely rare. We describe a 67-year-old man with gastric cancer and right ureteral metastasis. The patient was from Ardabil Province, a high incidence area for gastric cancer in Ir...

Ureteral jets are the result of a forceful ejection of urine from the vesicoureteral junction into the urinary bladder. By using color Doppler ultrasonography (US), we aimed to identify distinct ureteral jets in dogs, provide insight into ureteral obstruction, and facilitate study of urodynamics and vesicoureteric sphincter function via pulsed Doppler US. Color Doppler US was applied to detect ...

Ureteral triplication is one of the rarest malformations of the upper urinary tract. The association of ureteral triplication and obstruction is even rarer. We report a rare case of ureteral triplication with hydronephrosis due to ureteropelvic junction (UPJ) obstruction and stenosis at the upper pole ureter. To the best of our knowledge, this is only second such case reported in literature. Th...

INTRODUCTION Unilateral ureteral obstruction breaks out events that cause the transitory increase of glomerular permeability to macromolecules, both in the obstructed kidney and in the contralateral kidney, suggesting the presence of some factor, with a systemic action, liberated as a response to the obstruction. We know that the rennin-angiotensin system is activated by acute ureteral obstruct...

Prostanoids produce significant effects in the ureter, particularly in response to obstruction. Ureteral obstruction is associated with increased prostanoid synthesis via cyclooxygenase induction; however, prostaglandin degradation mediated by 15-hydroxyprostaglandin dehydrogenase (PGDH) has not been evaluated in the ureter. The purpose of this study was to determine whether PGDH steady-state m...

Ureteral obstruction is characterized by decreased renal blood flow that is associated with hypoxia within the kidney. Adrenomedullin (AM) is a peptide hormone with tissue-protective capacity that is stimulated through hypoxia. We tested the hypothesis that ureteral obstruction stimulates expression of AM and hypoxia-inducible factor-1 (HIF-1alpha) in kidneys. Rats were exposed to bilateral ure...

56 percutaneous nephrostomies were evaluated in 50 patients, with a malignant underlying factor in 32 and benign conditions in 24. The clinical indication was decompression for supravesical obstruction with or without azotemia in the majority of cases. Less common indications were management of ureteral fistula, ureteral stricture dilatation, and pelvic stone extraction. Serious complicati...

Ureteral obstruction is relatively common after renal transplantation. A rare cause is the inguinal herniation of the transplant ureter. We report a case of late allograft renal transplant failure due to ureteral herniation as well as ureterovesical junction stenosis.