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Featured researches published by Sedat Yildirim.


Langenbeck's Archives of Surgery | 2006

Retained surgical sponge (gossypiboma) after intraabdominal or retroperitoneal surgery: 14 cases treated at a single center

Sedat Yildirim; A. Tarim; Tarik Zafer Nursal; Tulin Yildirim; Kenan Caliskan; Nurkan Törer; Erdal Karagulle; Turgut Noyan; Gokhan Moray; Mehmet Haberal

Background and aimsThe objective of this study was to present the etiology, clinical presentation, diagnosis, and management for 14 cases of gossypiboma [retained surgical sponge (RSS)] treated at a single center and to emphasize the importance of this potential complication.MethodsData for 14 cases of RSS treated between January 1999 and December 2004 were retrospectively assessed. The details of preoperative evaluation, demographic features, and operative findings were recorded. Use of, and findings from, abdominal x-ray, ultrasonography, computed tomography, magnetic resonance imaging, and upper-gastrointestinal endoscopy were also noted.ResultsIn all cases, the RSS was surgically removed. Thirteen of the 14 patients were symptomatic, and the most frequent finding was nonspecific abdominal pain and intestinal obstruction. Four patients required urgent surgery because the sponges were causing intestinal obstruction or intraabdominal sepsis. Based on history, physical examination findings, and diagnostic imaging, RSS was diagnosed preoperatively in five of the patients. Postoperative complications, including surgical site infection and evisceration, occurred in five cases.ConclusionRSS can lead to significant medical and legal problems between the patient and the doctor. RSS may be incorrectly diagnosed preoperatively, which can lead to unnecessary invasive diagnostic procedures and operations. Strict measures must be taken to prevent this complication.


American Journal of Surgery | 2008

Clinicopathological significance of PTEN loss and the phosphoinositide 3-kinase/Akt pathway in sporadic colorectal neoplasms: is PTEN loss predictor of local recurrence?

Tamer Colakoglu; Sedat Yildirim; Fazilet Kayaselcuk; Tarik Zafer Nursal; Ali Ezer; Turgut Noyan; H. Karakayali; Mehmet Haberal

BACKGROUND PTEN is a tumor-suppressor gene located on chromosome 10. Deficient PTEN expression leads to activation of the phosphoinositide 3-kinase (PI3K)/Akt (pAkt) signaling pathway, which may contribute to multiple human cancers. The relation between PTEN expression and Akt activation is still unclear in colorectal cancers and adenomatous polyps. Moreover, PTEN and pAkt expression in relation to demographic, tumoral, and outcome variables remains to be elucidated. METHODS PTEN and pAkt expression were evaluated in 76 primary colorectal cancers and 25 adenomatous colorectal polyp tissues using immunohistochemical staining on paraffin-embedded sections. PTEN and pAkt expression were compared with clinicopathologic features of colorectal cancers. The relationship between PTEN and pAkt expression was also investigated. RESULTS In colorectal cancers, pAkt expression was found to be significantly higher than polyps (P = .007). On the other hand, PTEN expression was significantly lower in polyps (P <.0001). In colorectal cancer patients, PTEN expression showed a negative correlation with young age, female sex, and left-sided (distal) tumors. On multivariate analysis, low PTEN expression (PTEN loss) was noted as an independent parameter for local recurrence (P = .024). There was significant association between pAkt expression and stage (P = .008), and preoperative serum carcinoembryonic antigen (CEA) levels (P = .017) in colorectal cancers. A negative correlation between PTEN and pAkt expression was found in colon cancer patients (P = .010), whereas no significiant association was found in adenomatous polyps (P = .403). No correlation of PTEN expression or pAkt expression was observed in Kaplan-Meier survival statistics and multivariate analyses for disease-free and overall survival. CONCLUSIONS The current study suggests that the PTEN loss-PI3K/pAkt pathway may play an important role in sporadic colon carcinogenesis and that reduced PTEN expression may predict relapse in colorectal cancer patients.


Journal of Burn Care & Rehabilitation | 2005

Epidemiology of pediatric burn injuries in southern Turkey.

A. Tarim; Tarik Zafer Nursal; Sedat Yildirim; Turgut Noyan; Gokhan Moray; Mehmet Haberal

The aim of this study was to identify the epidemiological features of pediatric burn injuries in southern part of Turkey. In this retrospective study, 137 hospitalized pediatric patients (85 men and 52 women) who were admitted to our burn unit during a period of 3 years were analyzed. Pediatric patients were categorized into three groups: the infants and toddlers (0-2 years), early childhood (3-6 years), and late childhood (7-15 years). Epidemiological data included age, sex, location, the cause and type, and place of burn. In the first two groups, scalding (95.1% and 86.7%, respectively) was the predominant cause of burn whereas in late childhood electric burns (51.4%) were a more common occurrence. No differences were found between the groups with respect to mean TBSA and full-thickness burns. A total of 15 (10.1%) patients died during the study period. A total of 74.4% of burn injuries occurred at home, and almost all were preventable, with 16 % of the burns occurring in the autumn; however, 42% occurred in the summer. These findings will be used as a basis for developing targeted preventive programs to protect children from burns. We also consider it is necessary to educate children and their parents about the prevention of burn injuries.


Journal of Clinical Apheresis | 2009

Preoperative therapeutic plasma exchange in patients with thyrotoxicosis

Ali Ezer; Kenan Caliskan; Alper Parlakgumus; Sedat Belli; Ilknur Kozanoglu; Sedat Yildirim

The purpose of this report was to determine the effectiveness of therapeutic plasma exchange (TPE) in preoperative preparation of patients with thyrotoxicosis scheduled for either thyroid or nonthyroid surgery. We retrospectively reviewed 11 patients with thyrotoxicosis and those who prepared surgery with plasmapheresis between 1999 and 2008 at our institution. Ten patients underwent thyroid surgery and one patient was operated for femur fracture during antithyroid drug treatment. The indications for plasmapheresis in all patients with severe thyrotoxicosis were poor response to medical treatment (seven patients), agronulocytosis due to antithyroid drugs (three patients), iodine‐induced thyrotoxicosis (Jodd Basedow effect in one patient), and rapid preparation for urgent orthopedic operation (one patient). After TPE, we observed a marked decrease in free thyroxin (FT3) and free triiodothyronin (FT4) levels; however, the decline in the biochemical values were not statically significant (P > 0.62, P > 0.15). Although both FT3 and FT4 levels remained above the normal limits in two of 11 patients, the signs and symptoms of thyrotoxicosis improved in all patients and no thyroid storm observed during the perioperative period. TPE can be considered a safe and effective alternative to prepare patients with thyrotoxicosis for surgery when drug treatment fails or is contraindicated and when emergency surgery is required. J. Clin. Apheresis, 2009.


Scandinavian Journal of Infectious Diseases | 2005

A rare cause of acute appendicitis: Parasitic infection

Sedat Yildirim; Tarik Zafer Nursal; A. Tarim; Fazilet Kayaselcuk; Turgut Noyan

The role of parasitic infection in the aetiology of acute appendicitis has been discussed for more than 100 years. The aim of this retrospective study was to determine the prevalence of parasitic infection in surgically removed appendices, and to identify whether this type of infection is associated with appendicitis. 104 appendices were removed from patients clinically diagnosed with acute appendicitis, and 30 were removed in the course of other surgical procedures. All the operations were performed at Baskent University Adana Hospital between January 1999 and December 2004. Enterobius vermicularis was identified in 4 (3.8%) appendices from patients with clinical appendicitis, and Entamoeba histolytica was detected in 1 (1.0%) appendix from this group. No parasites were found in the 30 appendices that were removed during other surgical procedures. Specimens from 3 of the 4 appendices with E. vermicularis showed no histological evidence of acute inflammation. It is concluded that parasites in the appendix may produce symptoms which resemble acute appendicitis, but parasitic infection rarely causes acute appendicitis.


Journal of Burn Care & Rehabilitation | 2003

Burns in southern Turkey: electrical burns remain a major problem.

Tarik Zafer Nursal; Sedat Yildirim; A. Tarim; K. Caliskan; A. Ezer; Turgut Noyan

In Turkey, burns represent a relatively small number of injuries overall, but they continue to be a major public health problem. Our aim in this study was to identify risk factors that affect outcome in burn patients hospitalized in the southern part of our country, with special emphasis on electrical burns. The database for 109 burn patients who were admitted to our burn center from April, 2000, through August, 2001, was retrospectively analyzed. Electrical injury was the cause of burn in 23 (21%) of the 109 cases. The burn causes differed among age groups and between the sexes, with males constituting 95% of the electrical burn patients. The mortality rate for the electrical burn group was lower than the rate for the rest of the burn patients (1/23 vs 17/86, respectively; P <.001); however, the opposite was true for complication rate (10/23 vs 5/86, respectively; P <.001), cost of treatment (8351 US dollars vs 5122 US dollars, respectively; P =.009), and length of hospital stay (39.9 vs 26.2 days, respectively; P < 0.001). The rate of electrical burn injury in Turkey has changed very little in the past two decades. This underlines the need for stronger efforts aimed at prevention, such as better public education and strict regulations regarding the distribution and use of electricity.


European Radiology | 2002

Small bowel obstruction due to phytobezoar: CT diagnosis

Tulin Yildirim; Sedat Yildirim; Özlem Barutçu; Levent Oguzkurt; Turgut Noyan

Abstract. Small bowel phytobezoars are rare and are almost always obstructive. The literature contains few reports on the radiological findings for primary small bowel bezoars. There is also very little published on CT results with this lesion, but the features of the scan are characteristic. We present the CT findings in a patient with an obstructive small bowel phytobezoar, and emphasize the diagnostic value of CT.


Hpb | 2006

Surgical treatment of liver hydatid cysts

Ali Ezer; Tarik Zafer Nursal; Gokhan Moray; Sedat Yildirim; Feza Karakayali; Turgut Noyan; Mehmet Haberal

BACKGROUND The surgical treatment technique for liver hydatic cyst (LHC) cannot be standardized, and the surgical technique should be tailored according to the extent of the cyst and any adjunct complications of hydatid disease. PATIENTS AND METHODS All patients were treated with albendazole (10 mg/kg/day) for 15 days preoperatively. Total pericystectomy was performed in three patients (7%). Partial cystectomy and its modifications were performed in the remaining 41 patients (93%). RESULTS A total of 44 patients were operated on for LHC between December 1998 and October 2004 in our center. Patients were evaluated with ultrasonography and computed tomography scan to determine the extent of the disease and preoperative staging. Twenty-four (53%) of these patients were women and 20 were men (median age, 52.5 years; range, 19-81 years). The majority of patients (n=27) had 1 cyst, and the remaining 17 patients had multiple cysts. In four patients (9.1%), daughter cysts were found in the biliary system, and abscesses were present in three patients (7%). Biliary fistula was the most frequent complication (n=5). Three patients had wound infections. Follow-up was complete for 33 patients (75%). The mean postoperative follow-up was 11.9+/-10.8 months; there were four recurrences during this time. DISCUSSION The aim should be to provide complete drainage and obliteration of the cavity. Bile leak and biliary obstruction may complicate the postoperative course if bile leakage into the peritoneal cavity and obstruction in the biliary system are missed.


Acta Chirurgica Belgica | 2005

Brachial artery pseudoaneurysm: a rare complication after haemodialysis therapy.

Sedat Yildirim; T. Zafer Nursal; Tulin Yildirim; A. Tarim; Kenan Caliskan

Abstract Haemodialysis patients carry a high risk of pseudoaneurysm due to inadvertent puncture of the brachial artery during venous cannulation for haemodialysis. Signs and symptoms are pulsatile mass and a systolic murmur. Complications are rupture, infection, haemorrhage, distal arterial insufficiency, venous thrombosis and neuropathy. Early diagnosis is essential to plan adequate treatment. Doppler US and angiography usually confirm the lesion accurately. Ultrasound guided compression, percutaneous injection of thrombin, endovascular covered stent exclusion, aneurysmectomy and surgical repair are different treatment options. We report clinical and radiological findings and treatment strategies in four dialysed patients who developed brachial artery pseudoaneurysms.


Abdominal Imaging | 2005

Primary hepatic carcinoid tumor: dynamic CT findings

S Ulusan; Osman Kizilkilic; Tulin Yildirim; Fahri Tercan; F. Bolat; Sedat Yildirim

Most carcinoid tumors involve the gastrointestinal tract or respiratory system. Primary hepatic carcinoid tumor is a rare entity. A 46-year-old woman presented with abdominal pain, vomiting, and diarrhea. She was diagnosed with primary hepatic carcinoid tumor based on radiologic and laboratory findings, namely a mass in the fifth segment of the liver and markedly elevated levels of 5-hydroxyindole acetic acid in the urine. Histologic and immunohistochemical findings of the resected liver segment showed a malignant carcinoid tumor of the liver. This case is of interest because of the rarity of this neoplasm. This report describes the case and reviews the clinical features, radiologic findings, and treatment in previously reported cases.

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