What is the Critical age for the Improvement of Parenchymal Thickness after Pyeloplasty?

Purpose: The most important point in cases of ureteropelvic junction obstruction (UPJO) is to decide on the need and timing of surgical treatment. Renal damage may become irreversible as the duration of the obstruction is prolonged. Worsening of hydronephrosis and decrease in renal parenchymal thickness after pyeloplasty may herald an irreversible renal damage.

Comparison of miniaturized percutaneous nephrolithotomy and retrograde intrarenal surgery: Which is more effective for 10-20 mm renal stones in children?

Objective: To compare miniaturized percutaneous nephrolithotomy (mini-PNL) and retrograde intrarenal surgery (RIRS) in children with 10-20 mm renal stones. MATERIALS AND METHODS: Between 2015 and 2019, 63 pediatric patients aged under 16 years who under went mini-PNL and RIRS for the treatment of kidney stones sized 10-20 mm were analyzed retrospectively. The mini-PNL group (n=30) was defined as group 1 and the RIRS group (n=33) was defined as group 2.

Recurrence of childhood nephrogenic adenoma in urinary bladder developed four years after previous surgery despite intravesical sodium hyaluronate therapy.

Nephrogenic adenoma (NA) is a rarely seen benign metaplastic lesion of the urinary tract. Its etiology is uncertain, but induced by chronic inflammation, irritation, and trauma. NA is located in the urinary tract, most commonly in the bladder.

Evaluation of the effects of sedation administered via three different routes on the procedure, child and parent satisfaction during cystometry.

Purpose: In this study, we retrospectively investigated case reports with and without midazolam administration via oral, intranasal and rectal before cystometry procedure. We aimed to compare the data to evaluate the effects of sedation before cystometry on the pediatric patients and parents' satisfaction.

Methods: A total of 124 ASA I-II pediatric cases aged 5-14 years were retrospectively investigated from the hospital records.

Is there an association between histopathological changes in the lower ureter and renal functions? Evaluation of patients who underwent ureteroneocystostomy for ureterovesical obstruction or vesicoureteral reflux.

Background/aim: We aimed to assess the relationship between the histological changes of the ureterovesical junction (UVJ) and renal functions. Therefore, we evaluated histological changes of the lower ureter and renal scintigraphy findings of patients for whom ureteroneocystostomy was performed because of vesicoureteral reflux (VUR) or ureterovesical junction obstruction (UVO).

Materials And Methods: UVJ specimens were obtained from 18 children.

Metanephric stromal tumor: a challenging diagnostic entity in children.

A case with a renal mass diagnosed as metanephric stromal tumor is presented. A 6-year-old boy presented with frequently recurring urinary tract infections. He had been followed up at different medical centers for the last 2 years with a 2 × 2 cm simple cyst localized in the inferior pole of the left kidney.