Publications by authors named "Halil Suat Ayyildiz"

Aim: The aim of this study was to evaluate functional and prognostic benefits of Doppler ultrasonography (DU), diuretic renal scintigraphy (DRS), and magnetic resonance urography (MRU) during diagnosis and follow-up of ureteropelvic junction obstruction (UPJO) and to examine apoptosis rates caused by UPJO in an experimental rabbit model.

Method: Twenty-four rabbits were divided randomly into two groups. The left kidneys of 15 rabbits from the first group underwent Ulm-Miller surgery to create UPJO, whereas the left kidneys of nine rabbits from the second group underwent sham surgery.

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Bladder exstrophy (BE) is a rare congenital anomaly. Owing to the advanced reconstructive surgical techniques and effective antibiotics, the incidence of urinary and systemic complications in patients with BE has decreased and the life expectancy has increased. However, this brings along social, sexual, and psychological problems; particularly, successful pregnancy and delivery is extremely rare in females with BE.

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Hydronephrosis is the most common genitourinary anomaly as detected on obstetric ultrasonography and the incidence of associated vesicoureteral reflux is around 10-12%. There is inconsistency in the literature regarding which child should under go a voiding cystourethrogram (VCUG) in cases of antenatal hydronephrosis (AHN). Besides, there is a scarcity of prospective studies to demonstrate the risk of varying degree of AHN, associated reflux and their long-term impact on the kidneys.

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Malignant peripheral nerve sheath tumors (MPNSTs) are uncommon in children and adolescents but occur more frequently in NF1 patients. Angiosarcomatous differentiation in MPNSTs is a rare entity with poor prognosis. We report on a 13-year-old boy with intrathoracic angiosarcoma arising in MPNST associated with NF1.

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