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Dive into the research topics where Jun Hyun Lee is active.

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Featured researches published by Jun Hyun Lee.


World Journal of Surgical Oncology | 2013

Safety of intracorporeal circular stapling esophagojejunostomy using trans-orally inserted anvil (OrVil™) following laparoscopic total or proximal gastrectomy - comparison with extracorporeal anastomosis

Yoon Ju Jung; Dong Jin Kim; Jun Hyun Lee; Wook Kim

BackgroundThere have been several attempts to develop a unique and easier way to perform esophagojejunostomy during laparoscopy-assisted total gastrectomy or laparoscopy-assisted proximal gastrectomy. The OrVil™ system (Covidien, Mansfield, MA, USA) is one of those methods, but its technical and oncologic feasibility have not been proven and need to be observed.MethodsAmong 87 patients who underwent laparoscopy-assisted total gastrectomy (LATG; 79 cases) and laparoscopy-assisted proximal gastrectomy with double tract anastomosis (LAPG_DT; 8 cases) from April 2004, 47 patients underwent the conventional extracorporeal method (Group I; 2004–2008) were compared with 40 patients treated with the intracorporeal OrVil™ system (Group II; 2009–2012).ResultsThere was no significant difference in clinicopathologic characteristics between the two groups except tumor location; more cardia lesions were involved in group II (p = 0.012). The mean time for esophagojejunostomy (E-J), defined as the time from anvil insertion to closure of the jejunal entry site has no significant difference (Group I vs II: 22.2 ± 3.2 min vs 18.6 ± 3.5 min, p = 0.623). In terms of anastomotic complication, there was no significant difference in E-J leakage and stricture. E-J leakage occurred in 2 out of 47 (4.3%) cases in group I and 2 out of 40 (5%) in group II (p = 0.628); half of them were treated conservatively in each group and the others underwent reoperation. E-J stricture occurred in 2 (4.3%) cases in group I and 1 (2.5%) in group II (p = 0.561), which required postoperative gastrofiberscopic balloon dilatation.ConclusionsEsophagojejunostomy using the OrVil™ system was a feasible and safe technique compared with the conventional extracorporeal method through mini-laparotomy in terms of anastomotic complications. Moreover, it can help to reduce surgeon’s stress regarding esophagojejunostomy because it needs no purse-string procedure and serves a secure operation view laparoscopically.


Journal of Gastric Cancer | 2012

Late Onset Iatrogenic Diaphragmatic Hernia after Laparoscopy-Assisted Total Gastrectomy for Gastric Cancer

Young Jin Suh; Jun Hyun Lee; Hae-Myung Jeon; Dongjin Kim; Wook Kim

Through the advent of surgical techniques and the improvement of laparoscopic tools including the ultrasonic activated scissor, laparoscopic gastrectomy has been increasingly used in far more cases of benign or malignant gastric lesions for the benefit of patients without compromising therapeutic outcomes. Even though possible complications provoked by the ultrasonic activated scissor can be prevented during the procedure with increasing advanced laparoscopic experience and supervision, unexpected late complications after the operations rarely occur. An extremely rare case of left incarcerated diaphragmatic hernia of the transverse colon developed in an 81-year-old female patient as a late complication, 8 months after laparoscopy-assisted total gastrectomy for gastric cancer, with laparoscopy successfully resumed and without the need to sacrifice any portion of the bowel.


Journal of The Korean Surgical Society | 2014

Laparoscopic resection for 125 gastroduodenal submucosal tumors

Dong Jin Kim; Jun Hyun Lee; Wook Kim

Purpose The present study aims to elucidate the treatment strategies of laparoscopic resection for gastroduodenal submucosal tumors (SMTs). Methods Data of 125 gastroduodenal STMs were collected retrospectively resected from August, 2004 to February, 2013. Surgical outcomes according to tumor locations, pathologic results and survival data for gastrointestinal stromal tumors (GISTs) were collected and analyzed. Results There were 55 male and 70 female patients with mean age 57.9 ± 12.7 years old. Mean tumor size of gastric SMTs was 2.7 ± 1.64 cm (range, 0.4-8.5 cm). GIST was the most common (n = 70, 56%). Regarding the tumor location, all the fundic lesions were GISTs and leiomyoma was occurred 58.8% of cardiac lesions. Ectopic pancreas and schwannomas were mostly located at body portion, 73% and 80%, respectively. SMTs located at duodenal bulb comprise 4 GISTs and 3 carcinoids. Surgical results comparing between lesions located at cardia, near-pylorus and else had no difference in operation time, hospital stay and complications. In terms of outcome of GIST, all patients underwent curative resection except one case of peritoneal sarcomatosis. There was one recurrence in a high risk group following resection. The cumulative 5-year disease free survival rate was 93.5% in all GISTs. There were two postoperative complications, one gastric outlet obstruction and one leakage following wedge resection. Conclusion Laparoscopic wedge resection is a safe and feasible procedure for the small to medium sized gastroduodenal SMTs even their locations are near cardia or pylorus.


Journal of The Korean Surgical Society | 2014

Very early-onset peritoneal recurrence following curative total gastrectomy for Borrmann 4 gastric cancer

Dong Jin Kim; Jun Hyun Lee; Wook Kim

Peritoneal dissemination is one of the treatment failures following gastric cancer surgery. We present a case with very early peritoneal recurrence, detected 8 days following curative surgery. A 39-year-old man, with Borrmann-4 advanced gastric cancer with signet ring cell type, underwent curative open total gastrectomy. However, focal peritoneal nodules on the left side of the diaphragmatic surface, which did not exist at the initial operation, were incidentally found during the reoperation for a postoperative intestinal obstruction via a laparoscopic approach. The pathologic result of the biopsied nodule revealed signet ring cell carcinoma. The patient underwent combination chemotherapy for several months without tumor regression. He suffered from intestinal obstruction again due to carcinomatosis peritonei, and died 9 months following initial surgery. Through this case report, we can carefully suspect that very early progression of cancer cells to carcinomatosis can occur in just several days after an operation.


Journal of The Korean Surgical Society | 2013

Afferent loop obstruction following laparoscopic distal gastrectomy with Billroth-II gastrojejunostomy

Dong Jin Kim; Jun Hyun Lee; Wook Kim

Purpose Afferent loop (A-loop) obstruction is an uncommon postgastrectomy complication following Billroth-II (B-II) or Roux-en-Y reconstruction. Moreover, its development after laparoscopic gastrectomy has not been reported. Here we report 4 cases of A-loop obstructions after laparoscopic distal gastrectomy (LDG) with B-II reconstruction. Methods Among the 396 patients who underwent LDG with a B-II anastomosis between April 2004 and December 2011, 4 patients had A-loop obstruction. Their data were obtained from a prospectively maintained institutional database and analyzed for outcomes. Results Four patients (1.01%) developed A-loop obstruction. All were male, and their median age was 52 years (range, 30 to 73 years). The interval between the initial gastrectomies and the operation for A-loop obstruction ranged from 4 to 540 days (median, 33 days). All 4 patients had symptoms of vomiting and abdominal pain and were diagnosed by abdominal computed tomographic (CT) scan. The causes of the A-loop obstructions were adhesions (2 cases) and internal herniations (2 cases) that were treated with Braun anastomoses and reduction of the herniated small bowels, respectively. All patients recovered following the emergency operations. Conclusion A-loop obstruction is a rare but serious complication following laparoscopic and open gastrectomy. It should be considered when a patient complains of continuous abdominal pain and/or vomiting after LDG with B-II reconstruction. Prompt CT scan may play an important role in diagnosis and treatment.


Journal of Gastric Cancer | 2012

Gastroduodenal intussusception resulting from large hyperplastic polyp.

Dong Jin Kim; Jun Hyun Lee; Wook Kim

Gastroduodenal intussusception is an infrequent cause of gastrointestinal obstructive disease. Benign neoplasms, gastrointestinal stromal tumors and pedunculated adenocarcinomas of less than 5 cm have been reported to cause gastroduodenal intussusception. We report a case of 76-year-old woman who was presented with a 3-day history of nausea and vomiting due to upper gastrointestinal obstruction. Computed tomography revealed gastroduodenal intussusception with the transpyloric herniation of alarge gastric hyperplastic polyp. The patient underwent laparoscopic wedge resection with the eversion method.


Journal of Gastric Cancer | 2011

Acute Gastric Necrosis Due to Gastric Outlet Obstruction Accompanied with Gastric Cancer and Trichophytobezoar

Dosang Lee; Kiyoung Sung; Jun Hyun Lee

Gastric necrosis due to gastric outlet obstruction is a very rare condition, but it might be fatal if missed or if diagnosis is delayed. Our patient was a 73-year-old male complaining of abdominal pain, distension and dyspnea for 1 day. In plain radiography and computed tomography, a markedly distended stomach and decreased enhancement at the gastric wall were noted. He underwent explo-laparotomy, and near-total gastric mucosal necrosis accompanied by sludge from the soaked laver was noted. A total gastrectomy with esophagojejunostomy was performed, and he recovered without sequelae. Final pathologic examination revealed advanced gastric cancer at the antrum with near-total gastric mucosal necrosis.


Journal of neurological disorders | 2016

Epiduroscopic Assisted Percutaneous Endoscopic Lumbar Discectomy: ATechnical Report

Gun Choi; Priyank Uniyal; Wook Ha Kim; Zohier Hassan; Bhupesh Patel; Jun Hyun Lee

The Authors report a new technique with trans sacral epiduroscopy assisted Percutaneous Endoscopic Lumbar Discectomy (PELD) for high grade centrally down migrated lumbar disc herniation. When the chances of missing the disc fragments are high, as in the cases of down migrated disc herniations by conventional transforaminal PELD, it can be assisted by sacral epiduroscopy for the complete removal and confirmation of any remnant disc fragments.


Journal of Spine | 2016

A New Progression Towards a Safer Anterior Percutaneous Endoscopic Cervical Discectomy: A Technical Report

Gun Choi; Priyank Uniyal; Zohier Hassan; Bhupesh Patel; Wook Ha Kim; Jun Hyun Lee; Hyun Jin Ma; Hyun Kyu Choi

Percutaneous Endoscopic Cervical Discectomy (PECD) has evolved as an efficient and minimally invasive procedure for both contained and non-contained cervical disc herniations in the recent years. With the advent of new working channel endoscopes and instruments design, the PECD is gaining popularity among spine surgeons and is becoming an alternative to the fusion surgery. The insertion of the working channel is the key to PECD which has to be placed very meticulously without injuring the vital structure in the neck anteriorly. We wish to present a technical report and brief discussion about the new instruments design and procedure that will enhance the safety measures in PECD.


Journal of Investigative Surgery | 2017

Technical Feasibility of Enterotomy Closure with Knotless Barbed Suture Material (V-Loc 180) in Esophagojejunostomy Using Linear Stapler during Totally Laparoscopic Total Gastrectomy for Gastric Cancer

Dong Jin Kim; Wook Kim; Jun Hyun Lee

ABSTRACT Purpose: Intra-corporeal esophagojejunostomy (EJ) using a linear stapler creates a stapler entry hole that requires secure closure during the totally laparoscopic total gastrectomy (TLTG) procedure for gastric cancer. Since a standard method has not been established yet, the feasibility of using V-loc 180 (Covidien, Mansfield, MA, USA) suture material was evaluated in this study. Materials and methods: During January 2012 to March 2015, 25 patients who underwent linear stapling EJ and V-loc 180 closure of remaining enterotomy were included in this study. Basic clinico-pathological characteristics, surgical outcomes, and short-term complications were analyzed. Results: The mean patient age was 60.4 ± 8.5 years. Nineteen males and six females were included in this study. The mean body mass index was 25.3 ± 2.3 kg/m2. There were 22 stage-I, 2 stage-II, and 1 stage-III gastric cancer patients. The mean operation time was 240.5 ± 44.6 min, and the time for anastomosis was 38.8 ± 11.2 min. The procedures were successfully performed in all cases without any intra-operative complications. There was one case of EJ leakage that occurred at the corner of EJ staple line and not at the enterotomy closure site. Conclusions: The closure of the remaining enterotomy site using V-loc 180 suture following linear stapler EJ is technically feasible and safe during the TLTG procedure. However, further experience and results from other surgeons are necessary to generalize this procedure.

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Wook Kim

Seoul National University

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Dong Jin Kim

Catholic University of Korea

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Hae Myung Jeon

Catholic University of Korea

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Cho Hyun Park

Catholic University of Korea

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Kyo Young Song

Catholic University of Korea

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Do Sang Lee

Catholic University of Korea

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Han Hong Lee

Catholic University of Korea

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Hyung Min Chin

Catholic University of Korea

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Il Young Park

Catholic University of Korea

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