Dermal regeneration sheet Integra® in management of recurrent Urethrocutaneous fistula after hypospadias surgery.

Background: Urethrocutaneous fistula UCF is the most common complication following surgical repair of hypospadias. Currently, the surgical technique mostly used to prevent recurrence employs preputial dartos or testicular tunica vaginalis flaps as a urethral covering. However, autologous tissues are limited in patients with multiple surgeries, and the use of biomaterials as a urethral coverage may represent a good alternative.

[Integra™ artificial sheet as urethral covering during surgery for hypospadias sequel.].

Estimado Editor: Escribimos esta carta en relación al artículo publicado en su revista el pasado mes de Diciembre de 2017, por Tardáguila Calvo et al., titulado "Reconstrucción genital con dermis artificial Integra® tras resección radical en un niño con linfangiomatosis difusa" (1), y que hemos leído con gran interés. A propósito de este trabajo creemos conveniente ampliar la información de los autores compartiendo nuestra experiencia previa (2,3).

[Comparative analysis of the treatment of mid-shaft and distal hypospadias according to Snodgrass surgical repair and Mathieu technique.].

Objective: The objective of this study is to perform an analysis of the patients who underwent middle and distal penile hypospadias repair using the two most widely used techniques in our Pediatric Urology Unit. MATERIAL AND METHODS: We perform a retrospective analysis of patients with a diagnosis of middle penile and distal penile hypospadias and operated by the Snodgrass or Mathieu technique, between 2011 and 2016 ensuring minimal follow-up of one year. We will analyze the use of each one, the results obtained, and the possible factors that could influence their success rate.

Atypical presentation of Leydig cell tumour in three prepubertal patients: diagnosis, treatment and outcomes.

Background Testicular tumours are uncommon in children, accounting for only 1% of all childhood tumours. Prepubertal Leydig cell tumours actively secrete testosterone and as a result, patients typically present with isosexual precocious pseudopuberty, this being the first cause of consultation. We present three cases of Leydig cell tumours in prepubertal patients with an atypical presentation.

[Analisys of non-neurogenic lower urinary tract dysfunction patterns controlled in a Pediatric urodynamic unit.].

Objectives: Between 7-10% of schoolagechildren are seen by specialists for non-neurogeniclower urinary tract dysfunction (LUTD). The objective ofour study is to classify these functional alterations in difused for the diagnosis and treatment in each pattern.

Material And Methods: We reviewed patients referredto our Urodynamic Unit for suspected LUTD for3 years; We reviewed epidemiological data, supplementarytest and treatments.

Negative Pressure Wound Therapy for a Complicated Abdominal Laparotomy in Neonatal Necrotizing Enterocolitis: A Case Report.

Necrotizing enterocolitis (NEC) is the most common surgical emergency in neonatal intensive care units, and patients who require surgery have high mortality and morbidity rates. The utility of negative pressure in the management of adults with complicated abdominal wounds has been documented, but there are few reports describing the use of negative pressure wound therapy (NPWT) in children or following neonatal surgery. The case of a 6 day old, 5-weeks premature neonate with NEC is presented.