Publications by authors named "Sangchul Yun"

Objective: Lynch syndrome (LS) increases the risk of various cancers, including colorectal cancer, endometrial cancer and gastric cancer (GC). The incidence of LS among microsatellite instability-high (MSI-H) GC and their association in South Korea remains underexplored. This study investigates LS-associated pathogenic germline variants in MSI-H GC patients using whole-exome sequencing (WES) on normal tissues.

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Objective: Popliteal artery entrapment syndrome (PAES) results from an anomalous relationship between the popliteal artery and the myofascial structures of the popliteal fossa. The long-term treatment outcomes are not well-known because of the rarity of the disease. This study aimed to establish a nationwide collective dataset and analyze treatment outcomes.

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Background: SurgiGuard is an absorbent hemostatic agent based on oxidized regenerated cellulose. The efficacy, effects and safety of SurgiGuard are equivalent to existing hemostatic agents in animal experiments. This study was designed to confirm that the use of SurgiGuard alone is effective, safe and feasible compared to combination with other hemostatic methods.

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Objective: , the French acronym for CHIVA, is a strategy aimed to convert a venous reflux into a physiological drainage. We compared CHIVA with radiofrequency ablation and determined its possible advantages.

Methods: We retrospectively analyzed the clinical recurrence, ultrasound recurrence, quality of life scores, and complications.

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Purpose: We sought to identify the risk factors for prolonged hospitalization and delayed treatment completion after laparoscopic appendectomy in patients with uncomplicated acute appendicitis.

Methods: The study retrospectively analyzed 497 patients who underwent laparoscopic appendectomies for uncomplicated appendicitis between January 2018 and December 2020. The patients were divided into an early discharge group (≤2 days) and a late discharge group (>2 days) based on the length of hospital stay (LOS).

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Background: Patients on haemodialysis (HD) are at high risk of infective endocarditis (IE). Research comparing the microbiological features as well as clinical characteristics and outcomes of HD and non-HD patients with IE is limited. Specifically, no data focussed on vascular access infections (VAIs) have been reported.

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Morel-Lavallée lesions (MLL) create pre-fascial space by shearing the subcutaneous tissues away from the underlying fascia, in a patient with trauma. Necrosis of the overlying skin can develop over a wide area of the lesion. The lesion might be contaminated by the surgical site due to careless intrusion when treating the combined arteriopathy.

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Although several studies have reported the efficacy and safety of ileal ureter in refractory ureteral strictures, reports on its long-term outcomes are still insufficient. In this case report, we present an excellent long-term outcome over three years without complication of bilateral ureteral replacement with ileum using '7' shaped configuration in a woman after undergoing radical hysterectomy and radiation therapy who had renal insufficiency due to ureteral stricture. This study gave us a useful information about the feasibility and safety of bilateral ileal ureter in patients with ureteral strictures and renal insufficiency.

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Purpose: High incidence of osteoporosis has been reported in breast cancer patients due to early menopause triggered by adjuvant treatment and temporary ovarian function suppression. In this study, we sought to determine whether long-term breast cancer survivors had an elevated risk of low bone density compared to the general population.

Methods: Long-term breast cancer survivors who had been treated for more than 5 years were selected for this study.

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Purpose: We aimed to evaluate the postoperative complications of laparoscopic colorectal cancer (CRC) surgery and the adverse events of postoperative chemotherapy in elderly patients compared to younger patients and to identify the factors influencing the termination of postoperative chemotherapy.

Methods: Between June 2015 and May 2018, 188 patients with CRC underwent laparoscopic surgery with curative intent. Patients aged ≥ 70 were defined as elderly.

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Article Synopsis
  • Various internal hernias exist, but cases of small bowel obstruction due to an internal hernia linked to the ureter are rare; this report discusses such a case following a woman's radical hysterectomy for cervical cancer.
  • The patient, a 53-year-old woman, exhibited symptoms like acute abdominal pain and vomiting, with imaging revealing issues like bowel dilation and ureter narrowing indicative of obstruction.
  • During exploratory laparoscopy, the hernia was successfully reduced without injury to the bowel, and the patient was discharged two days later post-surgery, highlighting the importance of thorough preoperative assessment and understanding different internal hernias.
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The primary site for a hemodialysis catheter insertion is the right internal jugular vein (IJV) followed by the left IJV and subclavian vein. In cases when veins of the upper extremities are exhausted, femoral veins are an alternative insertion location. Femoral catheter insertions should only be used for short periods because of the increased risk of infection.

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Rationale: Intravascular papillary endothelial hyperplasia (IPEH; Masson tumor) is a type of vascular lesions composed of reactive proliferation of endothelial cells that occur in organizing thrombus. It commonly occurs on the head, neck, trunk, and upper extremities, but rarely in the foot.

Patient Concerns: A 38-year-old woman visited the hospital with a mass on the dorsum of right foot, which gradually increased in size 3 months ago.

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Objective: Preoperative mapping of great saphenous vein (GSV) escape points to tributary veins (TVs) and targeted intervention of escape points may reduce recurrence rates of varicose veins (VVs) after endovascular treatment of saphenous veins and prevent saphenous nerve complications. The aim of this study was to perform an analysis of cartography after Doppler ultrasound mapping of escape points in patients with VVs and to suggest one point that may prevent recurrence and nerve complications.

Methods: Ultrasound assessment of VVs was performed from March 4, 2016, to July 15, 2016, specifically focusing on the locations of escape points from the saphenous vein to TVs.

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Purpose: The lower extremity has received its fair share of attention as a vascular access site in patients who have exhausted their upper arm vessels. However, experiences with lower extremity arteriovenous grafts (AVGs) have so far been disappointing because of high infection rates and severe limb ischemia. We report our experience with hemodialysis access from the lower extremity.

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Patients undergoing pancreaticoduodenectomy (PD) often require transfusion. However, transfusion-related complications and decreased blood donation in Korea encourage the development of new treatment strategies for PD patients. Although transfusion-free (TF) operation is thought to be beneficial, results supporting its beneficial effects are lacking.

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Background: Cholecystectomy might contribute to the development of hepatic steatosis through metabolic changes. The biologic alteration of the enterohepatic circulation of bile acids and the alteration of the metabolic activity of bile acid that follows cholecystectomy may contribute to hepatic steatosis. This prospective study was conducted to clarify the possibility of steatosis development after cholecystectomy.

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In patients highly suspected of developing steal syndrome, the subscapular artery may be a good supplier for functional prosthetic arteriovenous access, as well as a good solution for the prevention of steal syndrome. A 51-year-old woman was preparing to have a loop shaped polytetrafluoroethylene (PTFE) graft placed at the left upper extremity. The diameter of subscapular the artery was 3 mm.

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Primary cutaneous apocrine carcinoma is a rare adnexal tumor of the skin that occurs mainly in the axilla, anogenital area while the scalp and the lower extremities, especially the thigh, are very unusual sites. However, clinical or pathologic characteristics have not been well established due to a paucity of this tumor. Herein, we report very unusual case of apocrine carcinoma present as a huge mass in the lateral thigh of 77-year-old woman, which was aggravated abruptly after an irritation by moxa treatment, with a brief review of the literature.

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Article Synopsis
  • Recent research emphasizes that using ultrasound for central venous catheter insertion is essential in medical procedures.
  • The short-axis lateral in-plane technique is highlighted as the most effective method for accessing the internal jugular vein, particularly for hemodialysis catheter insertions.
  • Choosing a skin puncture site in the neck's posterior triangle reduces the risk of catheter complications like pinching and kinking, thereby improving flow rates and function.
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In a popular sense, Jehovah's Witnesses (JW) have their creeds, one of which is refusal of blood transfusion. Such refusal may impinge on their proper management, especially in critical situations. We present a case of successful bloodless multimodality therapy, which was performed for a JW.

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Background: A shunt is usually created from the distal arm (wrist) to the proximal arm (axillary loop) as long as no central stenosis has occurred. Creating vascular access in a patient with central vein stenosis could induce venous hypertension in the upper extremities. In such patients, an ipsilateral internal jugular vein (IJV) as an arteriovenous (AV) outflow vein should be the last option for using a particular arm.

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