Publications by authors named "Seung-Ik Ahn"

Pancreaticoduodenal artery (PDA) aneurysm and celiac artery (CA) stenosis are rare diseases in themselves. Interestingly, however, there are more cases documented in the literature in which these two disease entities occurred together than could be coincidental, and CA stenosis has been suggested as the provocative condition in developing PDA aneurysm. This study is aimed at examining the causal relationship between CA stenosis and PDA aneurysm by simulating the splanchnic circulation with an electric circuit.

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Objectives: It is unclear whether the improved glucose metabolism in pancreas head cancer (PHC) patients after pancreaticoduodenectomy is due to the anatomical change or the relief of pancreatic duct obstruction.

Methods: We divided 170 patients into the PHC group (n = 54, 31.8%) and other pathology (non-PHC) group (n = 116, 68.

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Background: Intrahepatic recurrence is the major cause of management failure after surgical resection of hepatocellular carcinoma (HCC). In the present study, we analysed intrahepatic recurrence by HCC distribution using Couinaud's liver segments.

Methods: Recurrence proximity levels were defined with respect to primary tumour locations from Level LR (locoregional) to Level IV.

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Functional and morphological evolution of remnant pancreas after resection for pancreatic adenocarcinoma is investigated.The medical records of 45 patients who had undergone radical resection for pancreatic adenocarcinoma from March 2010 to September 2013 were reviewed retrospectively. There were 34 patients in the pancreaticoduodenectomy (PD) group and 10 patients in the distal pancreatectomy (DP) group.

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Pancreaticoenteric anastomosis is the origin of postoperative pancreatic fistula (POPF). Although a variety of methods have been proposed to decrease the POPF rate, randomized controlled trials performed so far have failed to demonstrate superiority of any particular method to the others. Cattell-Warren duct-to-mucosa pancreaticojejunostomy (PJ) is a widely practiced procedure.

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Backgrounds/aims: The aim of this study was to identify the risk factors of the development of large amounts of ascites (LA) after hepatic resection for hepatocellular carcinoma (HCC).

Methods: The medical records of 137 consecutive patients who underwent hepatic resection for HCC from January 2010 to December 2014 were retrospectively reviewed. Patients were divided into two groups: LA group, with ascites drainage >500 cc per day over 3 days (n=37) and control group (n=100).

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Splenectomy is the definitive second-line therapy for refractory immune thrombocytopenic purpura (ITP), and has a reported response rate of 50-80%. Medical attention should be reconsidered when there is no evidence of accessory spleen in refractory ITP patients after splenectomy. The purpose of this study was to determine whether platelet count evolution differs between patients with a successful or unsuccessful result after splenectomy for ITP.

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Backgrounds/aims: Intrahepatic recurrence is one of the most important causes of compromised prognosis after surgical resection of hepatocellular carcinoma (HCC). This retrospective study was designed to identify and compare the risks of recurrence, early recurrence and multiple recurrences in a single patient population.

Methods: A series of 92 consecutive patients, who received resection for single nodular HCC at our institute from January 2007 to December 2013, were enrolled in this study.

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Non-functioning pancreatic neuroendocrine tumors (NF-PNETs) are rare tumors that account for 2% of all pancreatic malignancy. About 60% of NF-PNETs present distant metastases and usually hepatic metastases. However, cutaneous metastases are very rare.

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Backgrounds/aims: We investigated the clinical application of extended distal pancreatectomy in patients with pancreatic neck cancer accompanied by distal pancreatic atrophy. In this study, we have emphasized on the technical aspects of using the linear stapling device for a bulky target organ.

Methods: From March 2010 to September 2013, 46 patients with pancreatic adenocarcinoma, who underwent pancreatic resection with radical intent at our institute, were reviewed retrospectively.

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Backgrounds/aims: The post-operative complications and clinical course of pancreaticoduodenectomy (PD) largely depend on the pancreaticojejunostomy (PJ). Several methods of PJ are in clinical use. We analyzed the early results of binding pancreaticojejunostomy (BPJ), a technique reported by SY Peng.

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Background/aims: The aim of this study was to compare the outcomes of surgery and transarterial chemoembolization (TACE) for a solitary huge hepatocellular carcinoma (HCC) of Barcelona Clinic Liver Cancer (BCLC) stage A.

Methods: One hundred twenty-three consecutive patients with a solitary large (>5 cm) HCC classified at the BCLC stage A were analyzed. The posttreatment survival outcomes of patients that underwent surgery or TACE were compared.

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Background/aims: Microvascular invasion (MVI) is a well-known prognostic factor of postoperative recurrence and of overall survival (OS) in patients with hepatocellular carcinoma (HCC). We compared the treatment outcomes of transarterial chemoembolization (TACE) and surgery/radiofrequency ablation (RFA) according to the presence of MVI in patients with early or late recurrent HCC that presented as Barcelona Clinical Liver Cancer (BCLC) stage 0 or A after curative resection for HCC.

Methods: A consecutive 68 patients with recurrent HCC of BCLC stage 0 or A at our institution between 1998 and 2012 were retrospectively enrolled.

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Aim: To evaluate clinical outcomes of patients that underwent surgery, transarterial embolization (TAE), or supportive care for spontaneously ruptured hepatocellular carcinoma (HCC).

Methods: A consecutive 54 patients who diagnosed as spontaneously ruptured HCC at our institution between 2003 and 2012 were retrospectively enrolled. HCC was diagnosed based on the diagnostic guidelines issued by the 2005 American Association for the Study of Liver Diseases.

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Background: Clusterin is known to be expressed in many human neoplasms, and is believed to participate in the regeneration, migration, and anti-apoptosis of tumor cells. However, few reports have addressed the relationship between the manifestation of clusterin and clinicopathologic parameters in pancreas cancer patients. In the present study, the authors investigated the expression of clusterin and its clinical significance in pancreatic adenocarcinoma.

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Backgrounds/aims: For patients with acute cholecystitis, conversion from laparoscopic cholecystectomy to open surgery is not uncommon due to possibilities of serious hemorrhage at the liver bed and bile duct injury. Recent studies reported successful laparoscopic subtotal cholecystectomy for acute cholecystitis. The purpose of this study was to determine the efficacy and feasibility of such an operation based on the experience of surgeons at our facility.

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Aim: To analyze the risk factors of pancreatic leakage after pancreaticoduodenectomy.

Methods: We retrospectively reviewed 172 consecutive patients who had undergone pancreatico-duodenectomy at Inha University Hospital between April 1996 and March 2006. We analyzed the pancreatic fistula rate according to the clinical characteristics, the pathologic and laboratory findings, and the anastomotic methods.

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Aim: To examine if the rate of decrease in serum bilirubin after preoperative biliary drainagecan be used as a predicting factor for surgical complications and postoperative recovery after pancreaticoduodenectomy in patients with distal common bile duct cancer.

Methods: A retrospective study was performed in 49 consecutive patients who underwent pancreaticoduodenectomy for distal common bile duct cancer. Potential risk factors were compared between the complicated and uncomplicated groups.

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Cystic duct carcinoma is a rare disease. We present the case report of a 63-year-old man with cystic duct adenocarcinoma. In this patient, we performed cholecystectomy and segmental resection of the bile duct with lymph node dissection.

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Patients with primary small cell carcinoma of the liver have rarely been described in medical literature. Knowledge of clinical, pathological and immunohistochemical properties remains limited. We described an 82-year-old female patient with primary small cell carcinoma of the liver.

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Purpose: Endoscopic thyroidectomy (ET) requires a proper working space for adequate visualization of anatomical structures and proper instrument manipulation. The purpose of this prospective study was to estimate the feasibility and safety of ET using an anterior chest wall approach without gas insufflation.

Materials And Methods: The working space was created under a direct and endoscopic view through a 3-cm incision on the anterior chest wall.

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Aim: To evaluate the efficacy of a new nuclear imaging Infecton (Tc-99m ciprofloxacin) for the diagnosis of acute cholecystitis.

Methods: Sixteen patients thought to have acute cholecystitis were included in this study. The diagnosis of acute cholecystitis was made based on clinical symptoms and ultrasonographic and pathologic findings.

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Surgical clip migration and subsequent stone formation in the common bile duct is a rare but well-established complication after laparoscopic cholecystectomy. There are some suggestions about the mechanisms of the migration process, but the details are still unclear. We report here a case in which common bile duct stones were formed around surgical clips, and other clips were found to have penetrated into the common hepatic duct, which we believe were in the process of migration after laparoscopic cholecystectomy.

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The authors report a case of uncommon neurilemmoma on the tip of the tongue. A 23-year-old Korean man presented with a mass on the tip of the tongue, which was noted first 3 years before, when it was a small nodule. The mass had been growing slowly.

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