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Dive into the research topics where Hasan Özkan Gezer is active.

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Featured researches published by Hasan Özkan Gezer.


Pediatrics and Neonatology | 2016

Huge Neck Masses Causing Respiratory Distress in Neonates: Two Cases of Congenital Cervical Teratoma

Hasan Özkan Gezer; Pelin Oğuzkurt; Abdulkerim Temiz; Filiz Bolat; Akgün Hiçsönmez

Congenital cervical teratomas are rare and usually large enough to cause respiratory distress in the neonatal period. We present two cases of congenital huge cystic neck masses in which distinguishing cervical cystic hygroma and congenital cystic teratoma was not possible through radiologic imaging techniques. Experience with the first case, which was initially diagnosed and treated as cystic hygroma by injection sclerotherapy, led to early suspicion and surgery in the second case. The masses were excised completely and histopathologic diagnoses were congenital teratoma in both patients. Our aim is to review congenital huge neck masses causing respiratory distress in early neonatal life to highlight this dilemma briefly with these interesting cases.


The Turkish journal of gastroenterology | 2016

Choledochal cysts in children: Intrahepatic ductal dilatation does not indicate true intrahepatic biliary duct disease

Hasan Özkan Gezer; Pelin Oguzkurt; Abdulkerim Temiz; Emine Ince; Semire Serin Ezer; Akgün Hiçsönmez

BACKGROUND/AIMS Choledochal cysts (CCs) are rare abnormalities of the biliary tract. Presenting our clinical experience with CCs herein, we aimed to identify if intrahepatic ductal dilatation indicates true intrahepatic biliary duct disease. MATERIALS AND METHODS We retrospectively reviewed all cases of CCs in children diagnosed at a single center (Başkent University Fac-ulty of Medicine, Department of Pediatric Surgery) institution from 2005 to 2015. RESULTS Of 18 patients with CCs, 7 were males (39%). The age range was 3 months to 17 years (mean age, 6.2±3.8 years). Intrahepatic bile duct dilatation was detected in 13 (72%) patients by preoperative scanning. Type I, II, III, and IVA cysts were diagnosed in 13, 1, 1, and 3 patients, respectively. In all patients, total cyst excision and Roux-en-Y hepaticoenterostomy were performed. CONCLUSION In this study, most intrahepatic ductal dilatations seen on preoperative imaging were thought to be caused by a distal obstruction, not true intrahepatic biliary duct disease. This study supports the hypothesis that preoperatively distinguishing between type I and type IVA CCs is not necessary; it does not affect the initial treatment. We consider that complete cyst excision with Roux-en-Y hepaticojejunostomy is safe and should be performed soon after diagnosis, irrespective of symptom severity to avoid future complications.


Journal of Pediatric Surgery | 2016

Meckel diverticulum in children: Evaluation of macroscopic appearance for guidance in subsequent surgery.

Hasan Özkan Gezer; Abdulkerim Temiz; Emine Ince; Semire Serin Ezer; Bermal Hasbay; Akgün Hiçsönmez

BACKGROUND The treatment of incidentally encountered asymptomatic Meckel diverticulum (MD) is controversial. We evaluated whether the macroscopic appearance correlates with clinical features, histopathological findings, future complications, and management decisions. METHODS Patients who underwent MD resection at a single institution from 2000 to 2012 were retrospectively analyzed in terms of age, sex, clinical features, laboratory data, perioperative findings (diverticulum length, diameter, depth, thickening, and height-to diameter ratio [HDR]), pathology, and postoperative follow-up. RESULTS Fifty children were enrolled. Sixteen percent of the resected MDs were found incidentally. Of 42 complicated MDs, 17 (40%) were long (HDR ≥2), 14 (33%) were thickened, and 29 (70%) exhibited base widening. Histopathologically, ectopic mucosa was found in 32 (64%) of all MDs and in 5 (62%) of incidentally removed MDs. There was no statistical difference between the macroscopic appearance and clinical signs, sex, or presence of ectopic tissue based on palpation. CONCLUSION The macroscopic appearance of MD does not indicate the presence or absence of HGM and cannot be used to guide subsequent surgery. Additionally, 40% of symptomatic patients in our study had life-threatening complications requiring prompt fluid resuscitation. We consider that incidentally detected MD should be removed regardless of its macroscopic appearance.


Clinical Genetics | 2015

Hypertrophic pyloric stenosis in twins; genetic or environmental factors

Hasan Özkan Gezer; Pelin Oğuzkurt; Abdulkerim Temiz; Akgün Hiçsönmez

The etiology of infantile hypertrophic pyloric stenosis (IHPS) remains obscure. Over 120 years after the condition has become a clinical entity the debate whether the cause of IHPS is genetic, environmental or both, has not yet reached a final conclusion. Herein, we present a pair of monozygotic male twins with IHPS together with a review of the literature. We aimed to support genetic pre‐disposition in the epidemiology of IHPS, adding a twin data to the literature and to review the associated articles about the pathogenesis and inheritance patterns.


African Journal of Paediatric Surgery | 2014

Complications of total implantable access ports and efficacy of Taurolidine-citrate lock solution against catheter-related infections

Emine Ince; Pelin Oğuzkurt; Abdulkerim Temiz; Semire Serin Ezer; Hasan Özkan Gezer; Nalan Yazici; Akgün Hiçsönmez

Background: Totally, implantable access ports (TIAPs) are used for long standing venous catheterization. This study was designed to present our experiences of the TIAPs applications and efficacy of Taurolidine-citrate lock solution (TCLS) against catheter-related infections. Materials and Methods: We evaluated records of the 108 patients implanted with 112 TIAPs, which had been performed using heparin solution or TCLS between 2005 and 2013. Results: Duration of exposure to TIAPs was 17-2051 days (median: 411 days). The primary diagnoses were solid tumours (n = 57), lymphoma (n = 23), haematologic diseases (n = 23), nephrotic syndrome (n = 4), Hirschsprung disease (n = 1). The right external jugular vein was most frequently used vascular access route (72.3%). Mechanical complications were observed in four cases. TIAPs were removed due to remission in 19 cases and infection in 19 cases. Median time from implantation and to the development of infection was 60 days. Heparin solution had been used for care in 33 ports, whereas heparin and TCLS had been used in 79 ports. Based on statistical comparison, use of TCLS was considered to be an important factor for preventing infection (P = 0.03). Conclusion: We consider that TCLS reduces infection prevalence so TIAPs would be used more extensively and effectively to prevent infections.


Journal of Pediatric Surgery | 2013

Different clinical presentations, diagnostic difficulties, and management of cecal duplication

Abdulkerim Temiz; Pelin Oğuzkurt; Semire Serin Ezer; Emine Ince; Hasan Özkan Gezer; Akgün Hiçsönmez

BACKGROUND Cecal duplications (CDs) are very rare, representing 0.4% of all gastrointestinal duplications. This study evaluates the variable clinical presentations, imaging workup, and surgical management of CDs. METHODS The records of 7 patients who underwent surgery between April 2001 and December 2011 for CD were retrospectively reviewed. Sex, age, duration of complaints, diagnostic studies, surgical intervention, and pathologic findings were recorded. RESULTS The median age was 8 months, and mean age was 1.65 ± 2.88 years. Complaints were abdominal pain, rectal bleeding, vomiting, cough and dyspnea, and a prenatally detected cystic mass. The patients were referred with the diagnosis of appendicular abscess, necrotizing enterocolitis, gastrointestinal lymphoma, and intraabdominal cystic mass. Abdominal distention, signs of peritonitis, substernal retraction, fullness at right lower quadrant, and normal findings were detected on physical examination. Diagnostic imaging included plain abdominal radiography (7), ultrasonography (7), computed tomography (3), and magnetic resonance imaging (2). A cystic mass was reported on radiologic studies in 6 patients and appendicular abscess in 1. Cyst and cecum were resected, ileocolostomy was performed in 6 patients, and cyst excision was performed in 1. The diagnosis of duplication cyst was made by pathologic examination in all patients. CONCLUSIONS Cecal duplications may be detected incidentally; however, they may mimic appendicular abscess, a tumor mass, or necrotizing enterocolitis. Whether cystic lesions are symptomatic, they should be excised when detected because of possible complications.


Pediatrics International | 2016

Intestinal malrotation needs immediate consideration and investigation

Semire Serin Ezer; Pelin Oguzkurt; Abdulkerim Temiz; Emine Ince; Hasan Özkan Gezer; Senay Demir; Akgün Hiçsönmez

The aim of this study was to evaluate clinical presentation, diagnostic studies, and volvulus rate and to describe the unusual clinical clues of intestinal malrotation.


International Surgery | 2017

Approaches to Female Congenital Genital Tract Anomalies and Complications

Emine Ince; Pelin Oguzkurt; Semire Serin Ezer; Abdulkerim Temiz; Hasan Özkan Gezer; Şenay Demir; Akgün Hiçsönmez

Objective: Female congenital genital tract anomalies may appear with quite confusing and deceptive complications. This study aims to evaluate the difficulties in diagnosis and treatment of female c...


Surgical Endoscopy and Other Interventional Techniques | 2012

Management of pyloric stricture in children: endoscopic balloon dilatation and surgery

Abdulkerim Temiz; Pelin Oğuzkurt; Semire Serin Ezer; Emine Ince; Hasan Özkan Gezer; Akgün Hiçsönmez


Hernia | 2017

Poorly understood and often miscategorized congenital umbilical cord hernia: an alternative repair method

E. İnce; Abdulkerim Temiz; Semire Serin Ezer; Hasan Özkan Gezer; Akgün Hiçsönmez

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