OBJECTIVE Multicystic dysplastic kidney is a relatively common developmental abnormality in infants and children. Additional abnormalities like vesicoureteral reflux, ureteropelvic junction obstruction, and ureterovesical junction obstruction may accompany multicystic dysplastic kidney. In this article, we reviewed the pathogenesis, diagnosis, associated urinary tract anomalies and results of m...

We report our experience performing a robot-assisted dismembered pyeloplasty on a patient with a ureteropelvic junction obstruction in a horseshoe kidney and a prior history of endopyelotomy. We provide 18-month follow-up demonstrating that robotic pyeloplasty is a reasonable second treatment option for patients with horseshoe kidneys with failed prior endourological management.

Glomus tumors are uncommon benign perivascular neoplasms that have rarely been described outside of their usual peripheral soft tissue sites. We report a unique case of glomus tumor of the renal pelvis in a 53-year-old woman who presented with microscopic hematuria associated with obstruction of the ureteropelvic junction and marked hydronephrosis. At initial gross examination, the tumor mimick...

Normal Anatomy of the Urinary Prune-Belly Syndrome/ 289 Tract/ 255 Megacystis-Microcolon-intestinal Bilateral Renal Agenesis/ 259 Hypoperistalsis Syndrome/ 291 Infantile Polycystic Kidney Congenital Mesoblastic Disease/ 266 Nephroma/ 292 Adult Polycystic Kidney Disease/ 268 Wilms’ Tumor/ 293 Multicystic Kidney Disease/ 270 Normal Anatomy of the Adrenal Ureteropelvic junction Glands/ 295 Obstruc...

Ureteral polyps are rare causes of ureteropelvic junction (UPJ) obstruction, particularly in children. We report a nine year-old boy with UPJ obstruction initially suggestive of an obstructive urinary stone. CT showed intraureteral calcification at the UPJ and hydronephrosis. A retrograde pyelogram showed narrowing at the UPJ and partial obstruction that was found to be a ureteral polyp. This c...

Ureteral fibroepithelial polyp is an unusual benign tumor of a mesodermal origin. It is very rare in infants and children, and the majority of them, excluding ones secondary to chronic irritation, were presented as a single disease without associated lesion. We report a case of multiple ureteral fibroepithelial polyps associated with ureteropelvic junction obstruction in a 5 year-old boy.