Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Engin Yilmaz is active.

Publication


Featured researches published by Engin Yilmaz.


Journal of Pediatric Surgery | 2013

Treatment of adolescent pilonidal disease with a new modification to the Limberg flap: Symmetrically rotated rhomboid excision and lateralization of the Limberg flap technique

Çağatay Evrim Afşarlar; Engin Yilmaz; Ayşe Karaman; İbrahim Karaman; İsmet Faruk Özgüner; Derya Erdoğan; Yusuf Hakan Çavuşoğlu; Haşim Ata Maden

BACKGROUND/PURPOSE Pilonidal disease is a common and frustrating problem among adolescents due to its high recurrence rate. The rhomboid excision and Limberg flap techniques promise successful results, but the lower part of the incision left on the intergluteal sulcus is prone to recurrences. Consequently, we have developed a new modification to this technique and have designed a descriptive prospective study to evaluate its efficiency. METHODS We conducted this prospective study between March 2011 and March 2012. All of the patients who were operated on for sacrococcygeal pilonidal disease were included in this study. The surgical procedure primarily consisted of symmetrically rotated (clockwise) rhomboid excision and lateralization of the Limberg flap in order to keep the inferior corner of the suture line apart from the intergluteal sulcus. RESULTS A total of 15 adolescents (8 boys and 7 girls) were included in the study group. Of the patients, 47% were normal, 13% were overweight, and 40% were obese. Five patients were operated on under general anesthesia, and 10 were operated on under spinal anesthesia. The length of the flap margins ranged from 2.5 to 7 cm (median=4 cm). The median duration of hospitalization was 5 days, and the median duration of suction drainage was 4 days. The median postoperative follow-up period was 4 months (ranging from 1 to 12 months), and we did not encounter any wound infection or recurrent disease during this period. Only one patient had wound hematoma as a result of drain breakdown and was treated with wound care without any additional complications. CONCLUSION Although the number of patients in this study was small and the follow-up period was short, we obtained satisfactory results without any recurrence by performing a symmetrically rotated rhomboid excision and lateralized Limberg flap procedure.


European Journal of Pediatric Surgery | 2013

Are Neutrophil CD64 Expression and Interleukin-6 Early Useful Markers for Diagnosis of Acute Appendicitis?

İsmet Faruk Özgüner; Murat Kızılgun; Ayşe Karaman; Yusuf Hakan Çavuşoğlu; Derya Erdoğan; İbrahim Karaman; Çağatay Evrim Afşarlar; Engin Yilmaz

BACKGROUND/PURPOSE The aim of the study is to evaluate the diagnostic value of interleukin-6 (IL-6) level and neutrophil cluster of differentiation 64 (CD64) expression in diagnosis of acute appendicitis (AA). METHODS A prospective controlled trail was performed. Children who were hospitalized with a diagnosis of right lower quadrant pain were our cohort. Serum samples for white blood cell, C-reactive protein (CRP), leukocyte CD64 expression, and IL-6 were obtained from the patients just after their admission. Operation was performed if appendicitis seemed probable, others were observed actively. Patients who had noncomplicated appendicitis were Group 1, patients who had complicated appendicitis were Group 2, and patients who had discharged after observation without operation with a diagnosis of nonspecific abdominal pain and had negative appendectomy without another surgical disease were Group 3. RESULTS In this study, 49 patients were enrolled. CRP and CD64 levels were found higher in Group 2. IL-6 levels were found to be lower in Group 3 than Groups 1 and 2. CONCLUSIONS There was a difference between Group 2 and the other groups about CD64 levels. The CRP level and expression of leukocyte CD64 level did not effectively predict the diagnosis of noncomplicated appendicitis, but it predicted well the patients with complicated appendicitis. However, IL-6 levels are statistically significantly different between Group 3 and Groups 1 and 2. According to this result, IL-6 levels predicted well the patient with appendicitis. Applying additional diagnostic methods such as IL-6 levels seems to be helpful in reducing the numbers of false-positive diagnosis of AA.


Indian Journal of Critical Care Medicine | 2015

Evaluation of 968 children with corrosive substance ingestion

İbrahim Karaman; Orhan Koç; Ayşe Karaman; Derya Erdoğan; Yusuf Hakan Çavuşoğlu; Çağatay Evrim Afşarlar; Engin Yilmaz; Ahmet Ertürk; Özlem Balci; İsmet Faruk Özgüner

Background and Aims: The aim of the study was to evaluate the etiology, treatment, and prognosis in children who had presented at our clinic with corrosive substance ingestion and comparison of our results with the literature. Materials and Methods: The patients were put on nil by mouth and broad-spectrum antibiotics were administered. Oral fluids were started for patients whose intraoral lesions resolved and who could swallow their saliva. Steroids were not given, a nasogastric catheter was not placed, and early endoscopy was not used. Results: A total of 968 children presented at our clinic for corrosive substance ingestion during the 22-year period. The stricture development rate was 13.5%. Alkali substance ingestion caused a stricture development rate of 23%. A total of 54 patients required 1–52 sessions (mean 15 ±12) of dilatation. Conclusion: We do not perform early endoscopy, administer steroids, or place a nasogastric catheter at our clinic for patients who had ingested a corrosive substance. This approach has provided results similar to other series. We feel that determining the burn with early esophagoscopy when factors that prevent or decrease the development of corrosive strictures will be very important.


Journal of Pediatric Urology | 2013

Congenital hemiscrotal agenesis: Report of a rare entity

Engin Yilmaz; Çağatay Evrim Afşarlar; İbrahim Karaman; İsmet Faruk Özgüner; Ayşe Karaman; Fatih Hızlı

Congenital scrotal agenesis is the rarest anomaly of scrotal development disorder and is characterized by the absence of scrotal rugae in the perineum between the penis and anus. We report here a case of hemiscrotal agenesis in a 2-year-old boy. To the best of our knowledge, our patient is the second reported case of hemiscrotal agenesis in the English literature.


Journal of Pediatric Surgery | 2015

Early diagnosis of testicular torsion in rats by measuring plasma d-dimer levels: comparative study with epididymitis

Engin Yilmaz; Fatih Hızlı; Çağatay Evrim Afşarlar; Canan Demirtas; Sema Apaydın; İbrahim Karaman; Ayşe Karaman

PURPOSE To evaluate the differential diagnosis of testicular torsion and acute epididymo-orchitis by measuring the acute increase in plasma d-dimer levels in an experimental rat model. METHODS Thirty male Wistar rats were randomly divided into 5 groups, 1--sham operated group (acute term; 4 hours), 2--early torsion group (acute term; 4 hours), 3--late torsion group (long-term; 72 hours), 4--control of epididymitis group (vehicle injected; 0.1 ml physiologic saline injected into the left ductus deferens) (long term; 72 hours), 5--epididymitis group (0.1 ml Escherichia coli injected into the left ductus deferens), (n=6 for each group). RESULTS Serum d-dimer levels were significantly higher compared with the sham operated group with early torsion (p=0.002). This elevation remained mildly in the late torsion group compared with the control group (p<0.001), but there was no difference between 4 and 72 hours of the testis torsions (p=0.794). On the other hand, d-dimer levels were significantly higher in the torsion groups compared to the epididymitis group (p=0.042). CONCLUSIONS The present study demonstrated that testicular damage that occurs following testicular torsion shows a higher increase in d-dimer levels than epididymitis, suggesting that d-dimer level can be used as a diagnostic marker of testicular torsion.


Journal of Pediatric Surgery | 2011

Complete urogenital nonunion

Ayşe Karaman; İbrahim Karaman; Engin Yilmaz; Beytullah Yağız; İsmet Faruk Özgüner

A 7.5-year-old boy was admitted to our department with left undescended testis. On surgical exploration, the vas deferens and epididymis were normal in appearance in its route to the scrotum, but no obvious testis or testis-like structure was identified. Exploration was extended to the abdominal cavity via the processus vaginalis, and the testis was found near the sigmoid colon without any connection to the vas deferens and epididymis. The testis was freed from surrounding structures preserving the testicular vasculature, and an orchidopexy was performed. In cases of nonpalpable testis with the vas deferens and epididymis reaching to the scrotum, an intra-abdominal testis owing to a nonunion phenomenon must be considered, and extended exploration should be performed.


turkish Journal of Pediatric Disease | 2014

Labial Fusion in Prepubertal Girls

Özlem Balci; Ayşe Karaman; Ahmet Ertürk; İbrahim Karaman; Engin Yilmaz; Yusuf Hakan Çavuşoğlu; Derya Erdoğan; Meryem Anayurt; İsmet Faruk Özgüner

Objective: Labial fusion is a common benign genital disorder in prepubertal girls. Herein we aim to identify the characteristics and treatment outcomes of patients with labial fusion who were diagnosed and treated at our hospital. Material and Methods: Girls with labial fusion who presented to our outpatient department were retrospectively reviewed for their age, complaints, use of topical estrogen treatment, recurrence rate, time of recurrence and complications. Results: A total of 334 patients with labial fusion were identified. The ages of the patients varied between forty days and 8.5 years. Both the vagina and urethra were covered by the labial fusion and only a small gap could be seen near the clitoris in 90% of patients. Additional urinary disorders and vaginal discharge caused by labial fusion were identified in 35% of the patients. Patients were treated with manual detachment of the fusion and topical estrogen creams. Recurrence rate was 25%. Recurrence rates were higher in patients with older age and additional problems. conclusion: Labial fusion is a common benign condition in prepubertal girls. But it can cause urinary disorders in patients and serious anxiety in parents. The treatment can be easier and the recurrence rates lower if it is prevented effectively or diagnosed earlier.


Pediatric Surgery International | 2011

Perianal abscess and fistula-in-ano in children: clinical characteristic, management and outcome

Çağatay Evrim Afşarlar; Ayşe Karaman; Gonul Tanir; İbrahim Karaman; Engin Yilmaz; Derya Erdoğan; Haşim Ata Maden; Yusuf Hakan Çavuşoğlu; İsmet Faruk Özgüner


Pediatric Surgery International | 2015

A novel technique for laparoscopic inguinal hernia repair in children: single-port laparoscopic percutaneous extraperitoneal closure assisted by an optical forceps

Engin Yilmaz; Çağatay Evrim Afşarlar; Emrah Senel; Yusuf Hakan Çavuşoğlu; İbrahim Karaman; Ayşe Karaman; İsmet Faruk Özgüner


The Journal of Urology | 2016

MP11-16 IS IT NECESSARY TO USE REDUCED SIZE TRAINING BOXES FOR PEDIATRIC ROBOTIC SURGERY?- A PRELIMINARY COMPARATIVE STUDY

Engin Yilmaz; Saynur Yilmaz; Minki Baek; Josue Ortiz Romero; Chester J. Koh

Collaboration


Dive into the Engin Yilmaz's collaboration.

Top Co-Authors

Avatar

İbrahim Karaman

Boston Children's Hospital

View shared research outputs
Top Co-Authors

Avatar

Ayşe Karaman

Boston Children's Hospital

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Derya Erdoğan

Boston Children's Hospital

View shared research outputs
Top Co-Authors

Avatar

Ahmet Ertürk

Boston Children's Hospital

View shared research outputs
Top Co-Authors

Avatar

Özlem Balci

Boston Children's Hospital

View shared research outputs
Top Co-Authors

Avatar

Haşim Ata Maden

Boston Children's Hospital

View shared research outputs
Top Co-Authors

Avatar

Chester J. Koh

Baylor College of Medicine

View shared research outputs
Researchain Logo
Decentralizing Knowledge