Publications by authors named "Petros Mirilas"

Treatment of pilonidal sinus disease with conventional excision techniques is associated with recurrence up to 20 to 30% (primary closure) or with prolonged healing that might last months (closure by secondary intention). Endoscopic pilonidal sinus treatment (EPSiT) is gaining increasing popularity. This systematic review aims to summarize and evaluate the reported outcomes of pediatric EPSiT (PEPSiT) to date.

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Surgical abnormalities of the adnexa in children and adolescents include a variety of ovarian and paraovarian lesions ranging from benign functional cysts to malignant tumors, torsion of the ovary and/or the fallopian tube, and adnexal infectious lesions ranging from salpingitis to tubo-ovarian abscesses. Presentations vary from asymptomatic pelvic masses to acute abdomen, and some ovarian tumors might present with precocious puberty or virilization. Acute pain might be caused by hemorrhage or rupture of ovarian or paraovarian cysts, adnexal torsion or adnexal infection.

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Obstructive vaginal and uterine anomalies including imperforate hymen, transverse vaginal septum, and vaginal and/or cervical atresia or aplasia, might rarely present in infancy or childhood with hydrocolpos and/or hydrometra but they usually go unrecognized until presentation with amenorrhea and hematocolpos and/or hematometra in puberty. They should always be included in the differential diagnosis of a suprapubic and/or introital mass; in the latter case, vaginal vascular malformations and vaginal tumors should also be considered. Uterovaginal aplasia typically manifests with amenorrhea in puberty and needs to be differentiated from complete androgen insensitivity syndrome and gonadal dysgenesis of genetic males.

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Background/purpose: Laparoscopic orchiopexy (LO) was recently described as superior to open orchiopexy (OO) for palpable undescended testes (UDT). We aimed to investigate the outcomes of LO of palpable UDT in relation to high retroperitoneal dissection, Prentiss maneuver and intrascrotal testis fixation; also, to identify evidence for the safety, efficacy and cost of LO compared with OO in palpable UDT.

Methods: Systematic search was performed for all studies on LO for palpable UDT, and for all comparative studies between LO and OO in palpable UDT.

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Background: Although fibrosis is the main determinant of liver stiffness, other disease-related factors usually disregarded in studies on liver elastography, such as inflammation and cholestasis, may influence liver stiffness.

Objective: To evaluate the accuracy of two-dimensional (2-D) shear wave elastography in assessing liver fibrosis in children with chronic liver disease by controlling for the confounding role of several disease- and patient-related factors.

Materials And Methods: Three disease groups were studied: 1) various chronic liver diseases, 2) autoimmune hepatitis and 3) biliary atresia.

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Background: There is an endless debate on whether androgens mediate testis descent through developmental changes in the gubernacular or the cranial suspensory ligament.

Objective: To investigate the relation of any possible morphologic changes in the genital mesentery, that is, the system of genital peritoneal folds including the gubernacular and cranial suspensory ligaments, with the event of testis non-descent in rats prenatally exposed to the antiandrogen flutamide.

Materials And Methods: Time-pregnant Sprague Dawley rats received flutamide (100 mg/kg/d) or vehicle subcutaneously on gestational days 16-17.

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Background: Previous evidence associating ileocecal valve removal (ICVR) with a reduced risk of fecal impaction of the ileocecum in cystic fibrosis indicated possible benefits from ileocecal valve loss in disorders with inhibited proximal colon transit caused by fecal dehydration and hypoperistalsis. We aimed to investigate the ability of ICVR in reversing fecal impaction in a loperamide-induced model of a similar pattern of inhibited proximal colon transit in rats.

Materials And Methods: Thirty pubertal Sprague-Dawley rats were rendered constipated with subcutaneous loperamide treatment (1 mg/kg/d) for 7 d.

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Purpose: To investigate whether testis-epididymis dissociation encountered in boys with cryptorchidism/hydrocele is related with an abnormal persistence of the fetal mesentery of testis and associated ducts.

Methods: We examined the morphology of peritoneal folds of the testis, epididymis, and vas deferens in 25 boys operated for unilateral cryptorchidism [inguinal (n = 20), intrabdominal (n = 5)] and 20 boys operated for unilateral communicating hydrocele. Findings were compared with the normally persisting genital mesentery of rats (n = 30, both sides), a known animal model of the genital mesentery of human fetuses, as well as with the normal mature pattern of genital peritoneal folds in adult male cadavers (n = 12, both sides).

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Central venous catheterisation is routinely performed in paediatric patients to facilitate therapeutic management when long-term vascular access is needed. Misplacement of the catheter tip in thoracic vessels other than the superior vena cava has been described, along with related complications. Hereby, a case of a 15-month-old child is presented with a fully functional Hickman catheter introduced via the left internal jugular vein.

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Introduction: The optimal thoracotomy approach for the management of esophageal atresia and tracheoesophageal fistula (EA/TEF) with a right aortic arch (RAA) remains controversial.

Methods: Systematic review of complications and death rates between right- and left-sided repairs, including all studies on EA/TEF and RAA, apart from studies focusing on long-gap EA and thoracoscopic repairs. Review of right- and left-sided surgical anatomy in relation to reported complications.

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Background/purpose: In the few studies on intestinal complications and growth of cystic fibrosis (CF) patients with a history of meconium ileus (MI), operated MI has not been investigated separately. We aimed to investigate the incidence of long-term intestinal obstruction sequelae [constipation, distal intestinal obstruction syndrome (DIOS)] and growth in CF patients operated for MI.

Methods: Retrospective study (1989-2016) including operative diagnoses and procedures, constipation and DIOS events, yearly Body Mass Index (BMI) measurements.

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Little is known about the possibility that ruptured appendicitis may produce a false sonographic appearance of intussusception. We present here a case of a periappendiceal phlegmon mimicking ileocolic intussusception on ultrasound in a 3.5-year-old girl and provide a surgico-anatomic explanation on the basis of the intraoperative findings for the false sonographic image.

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Background: We aimed to test whether testis rigidity (hardness) measured using a newly-designed device we previously introduced would offer more reliable assessment of histologic damage in undescended testes than conventional methods (consistency feel at palpation, volume measurement).

Materials And Methods: Forty-five 18-d-old Lewis rats underwent surgical inhibition of descent of left testes and were followed to 40 (n = 16), 63 (n = 14), or 90 days (n = 15). Another 45 18-d-old Lewis rats were sham operated (left side) and followed likewise (n = 14, n = 15, and n = 16).

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We aimed to determine the long-term results after infrapopliteal PTA (primary patency, limb salvage, survival) and examine for association with risk factors (e.g. diabetes, infection, etc).

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"Stepladder" surgery for fistula from second or third pharyngeal cleft and pouch is "blind." Neither intraoperative methylene blue injection and probing nor preoperative imaging (fistulogram ultrasound, computed tomography, magnetic resonance imaging) reveal three-dimensional anatomic relations of fistulas. This article describes the most common second and third fistula courses and demonstrates representation of their tracts with wires in human cadavers.

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"Anatomy of the abnormal"-a branch of surgical anatomy-deals with relations of an anomaly to surrounding entities. Here, lateral congenital anomalies of the pharyngeal apparatus are examined; their relations to entities of the neck can be explained embryologically. Location of embryonic pharyngeal arches, clefts, and pouches in the adult is presented and terminology of these anomalies (fistulas, sinuses, cysts) is defined.

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Knowledge of the embryogenesis of the pharyngeal apparatus is the only means of understanding the "architecture" of the neck. The embryonic pharynx (which includes future oral and nasal cavities) is a much more extensive area than the adult pharynx. The main feature of the developing pharynx is a series of arches, internal pouches, and external clefts, which together comprise the pharyngeal apparatus.

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