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Dive into the research topics where Yaman Tekant is active.

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Featured researches published by Yaman Tekant.


Surgical Endoscopy and Other Interventional Techniques | 1998

Diagnosis and treatment of common bile duct stones (CBDS) Results of a consensus development conference

A. Paul; Bertrand Millat; U. Holthausen; Stefan Sauerland; E. Neugebauer; J. C. Berthou; H.-J. Brambs; J. E. Dominguez-Muñoz; P. Goh; L. E. Hammarström; E. Lezoche; J. Périssat; P. Rossi; M. A. Röthlin; R. C. G. Russell; P. Spinelli; Yaman Tekant

AbstractBackground: Common bile duct stones (CBDS) are a frequent problem (10–15%) in patients with symptomatic cholecystolithiasis. Over the last decade, new diagnostic and surgical techniques have expanded the options for their management. This report of the Consensus Development Conference is intended to summarize the current state of the art, including principal guidelines and an extensive review of the literature. Methods: An international panel of 12 experts met under the auspices of the European Association of Endoscopic Surgery (EAES) to investigate the diagnostic and therapeutic alternatives for gallstone disease. Prior to the conference, all the experts were asked to submit their arguments in the form of published results. All papers received were weighted according to their scientific quality and relevance. The preconsensus document compiled out of this correspondence was altered following a discussion of the external evidence made available by the panel members and presented at the public conference session. The personal experiences of the participants and other aspects of individualized therapy were also considered. Results: Our panel of experts agreed that the presence of common bile duct stones should be investigated in all patients with symptomatic cholecystolithiasis. Based on preoperative noninvasive diagnostics, either endoscopic retrograde cholangiopancreaticography (ERCP) or intraoperative cholangiography should be employed for detecting CBDS. Eight of the 12 panelists recommended treating any diagnosed CBDS. For patients with no other extenuating circumstances, several treatment options exist. Stones can be extracted during ERCP, or either before or (in exceptional cases) after laparoscopic or open surgery. Bile duct clearance should always be combined with cholecystectomy. Evidence for further special aspects of CBDS treatment is equivocal and drawn from nonrandomized trials only. Conclusions: The management of common bile duct stones is currently undergoing some major changes. Many diagnostic and therapeutic strategies need further study.


Surgical Endoscopy and Other Interventional Techniques | 1996

Endoscopic sphincterotomy in the treatment of postoperative biliary fistulas of hepatic hydatid disease

Yaman Tekant; Orhan Bilge; Koray Acarli; Aydin Alper; Ali Emre; Orhan Arıoğul

AbstractBackground: Ten patients with postoperative external biliary fistula treated by endoscopic sphincterotomy are reported. Methods: Nine of these patients were operated for hepatic hydatid disease and one for a liver abscess. Mean daily output of bile through the fistulae which were present for 5–39 days was approximately 500 cc. Results: Treatment was successful in nine patients with closure of the fistulae in 2–15 days (mean, 7 days). No response was obtained in one patient who was reoperated, and an intrahepatic biliary duct was found to be completely eroded by the cyst wall. Conclusions: Endoscopic sphincterotomy should be the first-line treatment for postoperative external biliary fistulae related to hepatic hydatid disease.


American Journal of Surgery | 2000

Mesoatrial shunt in Budd-Chiari syndrome

Ali Emre; Goksel Kalayci; İlgin Özden; Orhan Bilge; Koray Acarli; Sabahattin Kaymakoglu; İzzet Rozanes; Atilla Ökten; Yaman Tekant; Aydin Alper; Orhan Arıoğul

BACKGROUND The operations with proven effects on survival in Budd-Chiari syndrome are shunt operations and liver transplantation. PATIENTS AND METHODS Between 1993 and 1999 (June), 13 cases of Budd-Chiari syndrome have been treated surgically. Four cases had concomitant thrombosis of the inferior vena cava; the others had marked narrowing of the lumen due to the enlarged caudate lobe. Mesoatrial (n = 12) or mesosuperior vena caval (n = 1) shunts were constructed with ringed polytetrafluoroethylene grafts. RESULTS The median portal pressure fell from 45 (range 32 to 55) to 20 (range 11 to 27) cm H(2)O (P <0.001). Two patients died in the early postoperative period. One patient who did not comply with anticoagulant treatment had a shunt thrombosis in the second postoperative year. The other 10 patients are alive without problems during a median 42 (range 1 to 76) months of follow-up. CONCLUSION Mesoatrial shunt with a ringed polytetrafluoroethylene graft is effective in Budd-Chiari syndrome cases with thrombosis or significant stenosis in the inferior vena cava.


World Journal of Gastroenterology | 2011

Intrahepatic biliary cystic neoplasms: Surgical results of 9 patients and literature review

Ali Ugur Emre; Kursat Rahmi Serin; İlgin Özden; Yaman Tekant; Orhan Bilge; Aydin Alper; Mine Gulluoglu; Koray Güven

AIM To investigate the eligible management of the cystic neoplasms of the liver. METHODS The charts of 9 patients who underwent surgery for intrahepatic biliary cystic liver neoplasms between 2003 and 2008 were reviewed retrospectively. Informed consent was obtained from the patients and approval was obtained from the designated review board of the institution. RESULTS All patients were female with a median (range) age of 49 (27-60 years). The most frequent symptom was abdominal pain in 6 of the patients. Four patients had undergone previous laparotomy (with other diagnoses) which resulted in incomplete surgery or recurrences. Liver resection (n = 6) or enucleation (n = 3) was performed. The final diagnosis was intrahepatic biliary cystadenoma in 8 patients and cystadenocarcinoma in 1 patient. All symptoms resolved after surgery. There has been no recurrence during a median (range) 31 (7-72) mo of follow up. CONCLUSION In spite of the improvement in imaging modalities and increasing recognition of biliary cystadenoma and cystadenocarcinoma, accurate preoperative diagnosis may be difficult. Complete surgical removal (liver resection or enucleation) of these lesions yields satisfying long-term results.


Digestive Surgery | 2003

Alveolar Echinococcosis in Turkey

Ali Ugur Emre; İlgin Özden; Orhan Bilge; Cumhur Arıcı; Aydin Alper; Attila Ökten; Bulent Acunas; Izzet Rozanes; Koray Acarli; Yaman Tekant; Orhan Arıoğul

Background: Radical resection is the only potentially curative treatment for hepatic alveolar echinococcosis (AE). Although Turkey is an endemic region, population screening is not performed and early diagnosis is rare. Consequently, surgeons are compelled to explore possibilities such as near-total resection and biliodigestive anastomosis for palliation of jaundice. Methods: Surgery was performed in 32 patients with hepatic AE with the following indications: (1) resection; (2) palliation of jaundice; (3) definite assessment of operability; (4) failure in the management of cavity infection by percutaneous methods. Curative resection (R0 = complete resection of all parasitic mass [n = 9], and R1 = a resection in which a small remnant was left on a vital structure [n = 8]) were performed in 17 patients, intrahepatic cholangiojejunostomy in 7, laparotomy-external drainage in 7, and debulking in 1. Results: Perioperative mortality rates were 2/17, 0/7, 2/7 and 1/1, respectively. Twelve patients in the curative resection group are alive without recurrence/progression of the small remnant during a median follow-up of 59 (range 27–116) months. One patient developed an inoperable recurrence that was treated with albendazole. One patient was lost to follow-up. Long-term albendazole treatment was effective in all R1 patients except a patient who had slow asymptomatic progression. Successful palliation of jaundice was achieved in 5 of the 7 intrahepatic cholangiojejunostomy patients. Conclusions: The results of R1 resection in alveolar hydatid disease are similar to those of R0 resection; a small remnant is successfully controlled by albendazole. In patients with jaundice due to hilar invasion, biliary diversion from segment 3 or 5 is effective for palliation of the jaundice and facilitates albendazole treatment.


World Journal of Surgery | 2008

Liver transplantation in the management of iatrogenic biliary tract injury.

İlgin Özden; Orhan Bilge; Yaman Tekant; Aydin Alper; Ali Emre; Orhan Arıoğul

We read with great interest the article by Thomson et al. on the role of resection and transplantation in the management of iatrogenic biliary tract injury [1]. In the discussion part, the authors stated that ‘‘The English literature reports ten patients requiring hepatic transplantation in the management of biliary injury after cholecystectomy... Of these ten patients, four have died while awaiting a transplant... and the other from Kaposi’s sarcoma posttransplantation.’’ For the sake of completeness and adequate emphasis on this serious health problem, we wish to draw your attention to the other reported 14 patients who were treated by liver transplantation after iatrogenic injury during cholecystectomy (mostly biliary injury, sometimes associated with vascular injury) [2–6]. Although a combined surgical and radiologic approach achieves high success rates in biliary repair, progression to biliary cirrhosis cannot be always prevented [1]. It is likely that liver transplantation will continue to be a life-saving option in a selected group of patients with iatrogenic injury during cholecystectomy. References


Journal of Hepato-biliary-pancreatic Surgery | 1997

The role of total pericystectomy in hepatic hydatidosis

Orhan Bilge; İlgin Özden; Yilmaz Bilsel; Yaman Tekant; Koray Acarli; Aydin Alper; Ali Emre; Orhan Arıoğul

Between 1977 and 1995, 495 patients were operated on for hepatic hydatidosis. Total pericystectomy was performed in 26 patients (closed technique in 21 and open technique in 5). Twenty-one patients had single cysts and 5 had two cysts. The median cyst diameter was 8cm (range; 3–20cm). The requirements for total pericystectomy were: (1) the cyst(s) should be located away from the hepatic veins, large bile ducts, or major branches of the portal vein and hepatic artery and (2) the patient should be fit to undergo a major operation. There was no procedure-related morbidity. One patient developed a biliary fistula that closed after endoscopic sphincterotomy. The median hospital stay was 7 days (range; 3–22 days). The median follow up was 24 months (range; 9–114 months). There was disease recurrence in a non-adjacent segment in 1 patient at 4 years. Pericystectomy is a potentially dangerous operation, but it avoids problems with cavity management and has low rates of biliary fistula, spillage, and recurrence. Its success stems primarily from careful patient selection.


Journal of Gastrointestinal Surgery | 2006

Hepatic atrophy-hypertrophy complex due to echinococcus granulosus

Koray Karabulut; İlgin Özden; Arzu Poyanli; Orhan Bilge; Yaman Tekant; Koray Acarli; Aydin Alper; Ali Emre; Orhan Arıoğul

Obstruction of a major hepatic vein, or major portal vein, or biliary tree branch causes atrophy of the related hepatic region, and frequently, hypertrophy in the remaining liver—the atrophy-hypertrophy complex (AHC). Whether hydatid cysts can causeAHCis controversial. The records of 370 patients who underwent surgery for hepatic hydatid disease between August 1993 and July 2002 were evaluated retrospectively. Excluding six patients with previous interventions on the liver, AHC had been recorded in the operative notes of 16 patients (4.4%); for all patients, a cyst located in the right hemiliver had caused atrophy of the right hemiliver and compensatory hypertrophy of the left hemiliver. The computed tomography images of seven patients were suitable for volumetric analysis. The median (range) right and left hemiliver volumes were 334 (0-686) ml and 1084 (663-1339) ml, respectively. The median (range) cyst volume was 392 (70–1363) ml. AHC due to Echinococcus granulosus was confirmed by objective volumetric analysis. The presence of AHC should alert the surgeon to two implications. First, pericystectomy may be hazardous due to association with major vascular and biliary structures. Second, in patients with AHC, the hepatoduodenal ligament rotates around its axis; this should be considered to avoid vascular injury if a common bile duct exploration is to be performed.


Turkish journal of trauma & emergency surgery | 2013

Hepatic hydatid disease requiring urgent treatment during pregnancy

Candaş Erçetin; İlgin Özden; Cem İyibozkurt; Koray Güven; Kursat Rahmi Serin; Orhan Bilge; Yaman Tekant; Aydin Alper; Ali Ugur Emre

BACKGROUND Pregnant women may experience an acute presentation of hepatic hydatid disease. The available literature is limited to case reports. METHODS The charts of 7 patients who underwent urgent treatment for hepatic hydatid disease during pregnancy between 1992 and 2010 were reviewed. RESULTS The median patient age was 27 (range 23-39) years and median gestational age was 18 (range 13-24) weeks. The symptoms were severe abdominal pain (4), vomiting (2), jaundice (2), pruritus (2) and severe dyspepsia (1); in the asymptomatic patient, a closed intraperitoneal rupture had been detected during gynecologic ultrasonography. Surgical drainage of the cysts was performed in all cases. The two patients with frank biliary rupture underwent choledochoduodenostomy or Roux-Y hepaticojejunostomy. Four patients required postoperative tocolysis. Albendazole was not used. All mothers gave birth to healthy babies at term. The patients were followed for a median of 9 (range 4-19) years. Two patients developed recurrences at 2 and 7 years; these were treated with surgical drainage and albendazole. CONCLUSION This entity entails the responsibility of two human beings. Although it imposes limitations on the routine diagnostic and therapeutic options due to risk of premature labor or teratogenicity, acceptable results can be obtained in collaboration with the department of obstetrics and gynecology.


Journal of Hepato-biliary-pancreatic Surgery | 1995

Solid and cystic tumors of the pancreas: A report of two cases

Orhan Bilge; Yaman Tekant; Ali Emre; Koray Acarli; Aydin Alper; Mehmet Sar; Orhan Arıoğul

Two patients operated on for solid and cystic tumors of the pancreas are presented. One of them had a history of a benign cerebral tumor (astrocytoma) for which a ventriculo-peritoneal shunt had been done 3 years previously. The operations performed were a type-I regional pancreatectomy in one patient and a Whipples procedure in the other. The patients were discharged well without complications and no recurrence has been detected 1 year after the operation

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Ali Ugur Emre

Zonguldak Karaelmas University

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