1.Video-assisted transthoracic liver resection in patients with marginal liver function: a retrospective cohort study
Ryong Ho JUNG ; Hyug Won KIM ; Sam-Youl YOON
Korean Journal of Clinical Oncology 2021;17(2):122-125
Purpose:
Laparoscopic hepatectomy has been widely performed by hepatobiliary surgeons for malignancy of liver and gained wide acceptance for various liver tumors, thanks to advances in surgical techniques and devices. But, there are some challenges for right side tumor in patients of cirrhotic liver. Especially, tumor located in right upper area is difficult for wedge resection in patients with marginal liver function, because trans-abdominal approach requires normal parenchymal dissection. Radiofrequency wave ablation is also difficult for such a lesion. So, we demonstrate unique technique of video-assisted transthoracic liver resection (VTLR) for overcome right upper side tumor abutting diaphragm.
Methods:
Four patients underwent VTLR. Four ports in right chest wall were created by a chest surgeon and diaphragm was open. Then traction of the diaphragm was done by suture. After exposure of liver surface, tumor localization was done by ultrasound. The mass excision was done by ultrasonic shear.
Results:
Four patients were discharged without complications within 11.3 days (range, 6–15 days). On average, patients started to consume a normal diet on an average of 2.4 days (range, 1–4 days).
Conclusion
VTLR is could be performed by an experienced surgeon and chest surgeon for right upper liver malignancy abutting diaphragm in patient of marginal liver function.
2.Usefulness of a Vascular Clipping System to Create an Arteriovenous Fistula
Jin Suk LEE ; Kuk-Jin NAM ; Sam-Youl YOON ; Kun Ok LEE ; Hyung Joon HAN ; Sung-Jin CHO ; Jong-Woong PARK ; Tae Jin SONG
Journal of Acute Care Surgery 2020;10(3):101-105
Purpose:
The vascular clipping system (VCS) is beneficial as it is simple and easy to apply for microvascular suturing. Arteriovenous fistula (AVF) creation is a very basic standard technique of microvascular surgery. In this study the VCS and the conventional suture methods were compared in a rabbit model using the carotid artery and vein to create an AVF.
Methods:
There were 28 rabbits assigned equally into 2 groups using the AVF creation method (conventional suturing or the VCS procedure). Histopathology was performed on fixed samples. The procedure time of the 2 methods and changes in histopathology of tissue samples after surgery were compared.
Results:
The VCS procedure showed a lower degree of fibrosis and hyperplasia histologically compared with the conventional suture method. The VCS was quicker to perform and no significant anastomosis stricture was observed.
Conclusion
In a rabbit model of AVF, the VCS has benefits over the conventional suture method. The VCS provides comparable patency rates, produces fewer side effects such as fibrosis and hyperplasia, and takes less operation time than suturing. The VCS is expected to be useful for cases where renal patients need periodic hemodialysis and thus repetitive access to a vessel.
3.Usefulness of a Vascular Clipping System to Create an Arteriovenous Fistula
Jin Suk LEE ; Kuk-Jin NAM ; Sam-Youl YOON ; Kun Ok LEE ; Hyung Joon HAN ; Sung-Jin CHO ; Jong-Woong PARK ; Tae Jin SONG
Journal of Acute Care Surgery 2020;10(3):101-105
Purpose:
The vascular clipping system (VCS) is beneficial as it is simple and easy to apply for microvascular suturing. Arteriovenous fistula (AVF) creation is a very basic standard technique of microvascular surgery. In this study the VCS and the conventional suture methods were compared in a rabbit model using the carotid artery and vein to create an AVF.
Methods:
There were 28 rabbits assigned equally into 2 groups using the AVF creation method (conventional suturing or the VCS procedure). Histopathology was performed on fixed samples. The procedure time of the 2 methods and changes in histopathology of tissue samples after surgery were compared.
Results:
The VCS procedure showed a lower degree of fibrosis and hyperplasia histologically compared with the conventional suture method. The VCS was quicker to perform and no significant anastomosis stricture was observed.
Conclusion
In a rabbit model of AVF, the VCS has benefits over the conventional suture method. The VCS provides comparable patency rates, produces fewer side effects such as fibrosis and hyperplasia, and takes less operation time than suturing. The VCS is expected to be useful for cases where renal patients need periodic hemodialysis and thus repetitive access to a vessel.
4.Comparison of point and 2-dimensional shear wave elastography for the evaluation of liver fibrosis
Sang Min LEE ; Min-Jeong KIM ; Jeong Hee YOON ; Wonju HONG ; Hong Il HA ; Kwanseop LEE ; Ji-Young CHOE ; Jung Woo LEE ; Sam-Youl YOON ; Junhee HAN
Ultrasonography 2020;39(3):288-297
Purpose:
This study aimed to assess the technical performance of ElastQ Imaging compared with ElastPQ and to investigate the correlation between liver stiffness (LS) values obtained using these two techniques.
Methods:
This retrospective study included 249 patients who underwent LS measurements using both ElastPQ and ElastQ Imaging equipped on the same machine. The applicability, repeatability (coefficient of variation [CV]), acquisition time, and LS values were compared using the chi-square or Wilcoxon signed-rank tests. In the development group, the correlation between the LS values obtained by the two techniques was assessed with Spearman correlation coefficients and linear regression analysis. In the validation group, the agreement between the estimated and real LS values was evaluated using a Bland-Altman plot.
Results:
ElastQ Imaging had higher applicability (94.0% vs. 78.3%, P<0.001) and higher repeatability, with a lower median CV (0.127 vs. 0.164, P<0.001) than did ElastPQ. The median acquisition time of ElastQ Imaging was significantly shorter than that of ElastPQ (45.5 seconds vs. 96.5 seconds, P<0.001). The median LS value obtained using ElastQ Imaging was significantly higher than that obtained using ElastPQ (5.60 kPa vs. 5.23 kPa, P<0.001). The LS values between the two techniques exhibited a strong positive correlation (r=0.851, P<0.001) in the development group. The mean difference and 95% limits of agreement were 0.0 kPa (-3.9 to 3.9 kPa) in the validation group.
Conclusion
ElastQ Imaging may be more reliable and faster than ElastPQ, with strongly correlated LS measurements.
5.Laparoscopic Whipple's Operation for Locally Advanced Gastric Cancer Invading the Pancreas and Duodenum: a Case Report
Chang Min LEE ; Sam Youl YOON ; Sungsoo PARK ; Seong Heum PARK
Journal of Gastric Cancer 2019;19(4):484-492
Few surgeons have adopted pancreaticoduodenectomy (PD) for the treatment of advanced gastric cancer (AGC) invading the pancreas or duodenum because it remains controversial whether its prognostic benefits outweigh the high morbidity rates in such advanced cases. However, recent technical advances have revived diverse surgical procedures in minimally invasive approaches. Inspired by this trend, laparoscopic PD procedures have been performed for AGC in our institute since 2014. We recently performed a laparoscopic Whipple's operation in a case of cT4b gastric cancer with invasion of the pancreatic head and duodenum.
Duodenum
;
Head
;
Pancreas
;
Pancreaticoduodenectomy
;
Stomach Neoplasms
;
Surgeons
6.Protective effect of ischemic postconditioning against hepatic ischemic reperfusion injury in rat liver.
Sam Youl YOON ; Chung Yun KIM ; Hyung Joon HAN ; Kun Ok LEE ; Tae Jin SONG
Annals of Surgical Treatment and Research 2015;88(5):241-245
PURPOSE: The efficiency of ischemic postconditioning (IPC) was evaluated in a rat model of ischemic liver. Concentration of survivin of liver tissue correlated with the degree of antiapoptosis, so survivin was estimated to evaluate the efficiency of IPC on ischemic reperfusion (IR) injury. METHODS: Twenty-four healthy rats were divided to three groups (SHAM, IR, and IPC). Rats in the SHAM group displayed no change during 3 hours. Rats in the IR group were ischemic within 1 hour of clamping the left hepatic artery and left portal vein. Reperfusion for 2 hours was then done. IPC group, intermittent 2, 3, 5, and 7 minutes of reperfusion followed by 1 hour of warm ischemia. Two-minute reocclusion was done after each reperfusion. Rat sera were analyzed for AST and ALT, and Western blot analysis of rat liver tissue of rats evaluated malondialdehyde (MDA) and survivin. RESULTS: MDA in the liver tissue of rats in the IR and IPC group were significantly high than in the liver tissue of the SHAM group (P = 0.003 and P = 0.008, respectively). Survivin was higher in the IPC group than in the SHAM and IR groups (P = 0.021 and P = 0.024, respectively). CONCLUSION: IPC could not prevent lipid oxidation in liver cell mitochondria, but did aid in the regeneration of ischemic injured liver cells. The results indicate that IPC can suppress the apoptosis of liver cells and reduce reperfusion injury of liver tissue.
Animals
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Apoptosis
;
Blotting, Western
;
Constriction
;
Hepatic Artery
;
Ischemic Postconditioning*
;
Liver*
;
Malondialdehyde
;
Mitochondria
;
Models, Animal
;
Portal Vein
;
Rats*
;
Regeneration
;
Reperfusion
;
Reperfusion Injury*
;
Warm Ischemia
7.Erratum: Therapeutic induction of hepatic atrophy for isolated injury of the right anterior sectoral duct following laparoscopic cholecystectomy.
Shin HWANG ; Sam Youl YOON ; Sung Won JUNG ; Jung Man NAMGOONG ; Gil Chun PARK ; Dong Il GWON ; Sung Gyu LEE
Korean Journal of Hepato-Biliary-Pancreatic Surgery 2015;19(4):194-194
The authors want to correct the title because this article.
8.A new glove port for single incision procedure.
Yoon Song KO ; Sam Youl YOON ; Hyung Joon HAN ; Tae Wan YIM ; Tae Jin SONG
Annals of Surgical Treatment and Research 2015;89(5):284-286
Single-incision laparoscopic surgery has gained increasing attention due to its potential to improve the benefits of laparoscopic surgery. However, inconvenience remains for inexperienced surgeons during surgery when instruments conflict with each other, and a glove port is used hesitantly for such diagnosis related groups (DRG) because of its high cost. Authors made a new glove port by an odd surgical gloves and one wound protectors. This glove port is ease to make besides being convenient to us, and inexpensive. This new glove port has the benefit of easy utilization and cost effectiveness for surgeons performing single-incision laparoscopic surgery.
Cost-Benefit Analysis
;
Diagnosis-Related Groups
;
Gloves, Surgical
;
Laparoscopy
;
Wounds and Injuries
9.Liver transplantation for acute-on-chronic liver failure from erythropoietic protoporphyria.
Pyoung Jae PARK ; Shin HWANG ; Young Il CHOI ; Young Dong YU ; Gil Chun PARK ; Sung Won JUNG ; Sam Youl YOON ; Gi Won SONG ; Tae Yong HA ; Sung Gyu LEE
Clinical and Molecular Hepatology 2012;18(4):411-415
Erythropoietic protoporphyria (EPP) is an inherited disorder of the heme metabolic pathway that is characterized by accumulation of protoporphyrin in the blood, erythrocytes, and tissues, and cutaneous manifestations of photosensitivity, all resulting from abnormalities in ferrochelatase (FECH) activity due to mutations in the FECH gene. Protoporphyrin is excreted by the liver, and excess protoporphyrin leads to cholelithiasis with obstructive episodes and chronic liver disease, finally progressing to liver cirrhosis. Patients with end-stage EPP-associated liver disease require liver transplantation. We describe here a 31-year-old male patient with EPP who experienced acute-on-chronic liver failure and underwent deceased-donor liver transplantation. Surgical and postoperative care included specific shielding from exposure to ultraviolet radiation to prevent photosensitivity-associated adverse effects. The patient recovered uneventfully and was doing well 24 months after transplantation. Future prevention and treatment of liver disease are discussed in detail.
Acute Disease
;
Adult
;
End Stage Liver Disease/etiology/pathology/*therapy
;
Ferrochelatase/genetics/metabolism
;
Humans
;
Liver Cirrhosis/diagnosis
;
*Liver Transplantation
;
Male
;
Mutation
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Protoporphyria, Erythropoietic/complications/*diagnosis/pathology
10.Effectiveness of external drainage of the bile duct in pancreaticoduodenectomy: a single surgeon's experience.
Jong Hee YOON ; Ki Hun KIM ; Jung Man NAMGOONG ; Sam Youl YOON ; Sung Won JUNG ; Yo Han PARK ; Hyung Woo PARK ; Cheon Soo PARK ; Hyo Jun LEE ; Do Hyun PARK ; Sang Soo LEE ; Dong Wan SEO ; Sung Koo LEE ; Myung Hwan KIM ; Shin HWANG ; Chul Soo AHN ; Deok Bog MOON ; Tae Yong HA ; Gi Won SONG ; Dong Hwan JUNG ; Gil Chun PARK ; Sung Gyu LEE
Korean Journal of Hepato-Biliary-Pancreatic Surgery 2011;15(4):231-236
BACKGROUNDS/AIMS: The rates of surgery-related complications during and after pancreaticoduodenectomy (PD) remain very high, reaching up to 41%. They were primarily caused by leakage of pancreatic juice. We evaluated the effectiveness of external drainage of the bile duct using a pigtail drain to prevent pancreatic leakage in patients undergoing PD. METHODS: We evaluated 79 patients who underwent PD using a single-layer continuous suture between the pancreatic parenchyma and jejunum after duct-to-mucosa anastomosis by a single surgeon from April 2005 to December 2008. Of the 79, 44 underwent external drainage (ED) of the bile duct using a pigtail drain, performed in the intraoperative field via a retrograde transhepatic approach, whereas 35 did not undergo ED. RESULTS: Age, sex distribution, number of total complications, pancreatic duct size, pancreatic texture and duration of hospital stay did not differ between patients who did and did not undergo ED. In groups with or without ED, 0 and 4 patients, respectively, showed leakage of pancreatic juice and the difference was statistically significant (p=0.02). CONCLUSIONS: The fact that none of the patients who underwent external drainage experienced pancreatic leakage, suggests that external drainage of the bile duct with a pigtail drain to decompress the jejunum and to drain pancreatic and bile juice is useful in preventing the complications of pancreatic leakage.
Bile
;
Bile Ducts
;
Drainage
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Humans
;
Jejunum
;
Length of Stay
;
Pancreatic Ducts
;
Pancreatic Juice
;
Pancreaticoduodenectomy
;
Pancreaticojejunostomy
;
Sex Distribution
;
Sutures

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