SAPHO 증후근에서의 신경근병증 - 증 례 보 고 -

한석,조태형,김세훈,임동준,박정율,정용구,서중근,Han, Seok,Cho, Tai Hyoung,Kim, Se Hoon,Lim, Dong Jun,Park, Jung Yul,Chung, Yong Gu,Suh, Jung Keun 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.11

SAPHO syndrome is an acronym for an increasingly recognized syndrome of synovitis, acne, pustulosis, hyperostosis, and osteitis. Most of the previously reported case are from Japan and Europe. The authors report a case of SAPHO syndrome in Korean female who presented with extrasternal neurologic symptoms. A 60-year-old female with thoracic and right chest wall pain presented with the sternocostoclavicular hyperostosis, and recurrent aseptic osteitis. Previously, she had hystrectomy and thyroidectomy due to uterine malignancy 25 years ago. Also, she started to take medications for palm and sole pustulosis 7 days prior to admission. Through evaluation of clinical, radiological, serological studies, studies was done along with bone needle biopsy for the biological reassessment. The hyperostosis was found in the pedicles of thoracic 8, 9, 10 vertebrae and sternoclavicular joint. Radio-isotope bone scan showed an accumulation of tracer in thoracic vertebra. The bone biopsy from these site showed increased osseous turnover, thickening of trabeculae accompanied by mild acculuation of granulation tissue and round cell infiltration, compatible with mild chronic inflammation with marrow fibrosis. The patient showed good response to conservative management. The authors report a case of SAPHO syndrome with thoracic radiculopathy. It is considered that SAPHO syndrome is related to spondyloarthropathy, and appears to have benign disease process with good prognosis.

Long Term Outcomes of Arteriovenous Grafts for Hemodialysis in Lower Extremities

한석,송단,윤상철 대한혈관외과학회 2016 Vascular Specialist International Vol.32 No.4

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.Materials and Methods: A retrospective review of 60 lower extremity AVGs created between January 2003 and December 2011 was performed. Age, sex, etiology of end-stage renal disease and complications were tabulated. Primary and secondary patency rates were determined.Results: The average age of the study population was 56 years and 38 patients were female. Renal failure was associated with hypertension in 40 (66.7%) patients, diabetes in 28 (46.7%) patients and cardiovascular disease in 9 (15.0%) patients. The follow-up period was 8-108 months. Fifty-four patients had bilateral central vein stenosis. Seven (11.7%) patients had primary failure of their AVG. There was no operation-related death. Primary and secondary patency rates were: 66% and 90% at 1 year, 40% and 90% at 2 years, 27% and 87% at 3 years, and 18% and 87% at 5 years, respectively. There were 105 postoperative complications that developed in 67 patients. Postoperative complications were: thrombosis (30), proximal vein stenosis (56), infection (9), bleeding with hematoma (1), perigraft seroma (3), steal syndrome (2), and pseudoaneurysm (4).Conclusion: A lower extremity AVG seems to be a viable option in patients with unusable upper extremity veins.

Comparison of the Effectiveness of Embolic Agents for Bronchial Artery Embolization: Gelfoam versus Polyvinyl Alcohol

한석,김영주,권우철,차승환,리원연 대한영상의학회 2010 Korean Journal of Radiology Vol.11 No.5

Objective: The purpose of this study was to compare the results of different agents for bronchial artery embolization of hemoptysis. Materials and Methods: From March 1992 to December 2006, a bronchial artery embolization was performed on 430 patients with hemoptysis. The patients were divided into three groups. Group 1 included 74 patients treated with a gelfoam particle (1×1×1 mm), while group 2 comprised of 205 patients treated with polyvinyl alcohol (PVA) at 355-500 μm, and group 3 included 151 patients treated with PVA at 500-710 μm. We categorized the results as technical and clinical successes, and also included the mid-term results. Retrospectively, the technical success was compared immediately after the procedure. The clinical success and mid-term results (percentage of patients who were free of hemoptysis) were compared at 1 and 12 months after the procedure, respectively. Results: Neither the technical successes (group 1; 85%, 2; 85%, 3; 90%) nor the clinical successes (group 1; 72%, 2; 74%, 3; 71%) showed a significant difference among the 3 groups (p > 0.05). However, the mid-term results (group 1; 45%, 2; 63%, 3; 62%) and mid-term results excluding the recurrence from collateral vessels in each of the groups (group 1; 1 patient, 2; 4 patients, 3; 2 patients) showed that group 1 was lower than the other two groups (p < 0.05). No significant difference was discovered for the mid-term results between groups 2 and 3. Moreover, the same results not including incidences of recurrence from collateral vessels also showed no statistical significance between the two groups (p > 0.05). Conclusion: Polyvinyl alcohol appears to be the more optimal modality compared to gelfoam particle for bronchial artery embolization in order to improve the mid-term results. The material size of PVA needs to be selected to match with the vascular diameter.

근골격 방사선 영상의 빠르고 쉬운 판독: 하지

한석,이영한,이승현,서진석 대한영상의학회 2017 대한영상의학회지 Vol.77 No.5

Radiograph remains an important diagnostic tool for detection of musculoskeletal diseases despite recent advances in computed tomography (CT) or magnetic resonance imaging (MRI). Many musculoskeletal disorders are primarily diagnosed by identifying characteristic features on radiographs, which are known to have diagnostic value. In addition, radiographs provide basic information for determining the necessity of cross-sectional imaging such as CT or MRI. Therefore, radiologists should be aware of the radiographic findings of musculoskeletal diseases and they should apply them to establish the diagnosis. This article presents a review of the important radiographic findings that enable the diagnosis of musculoskeletal diseases of the lower extremity. 최근 자기공명영상 및 전산화단층촬영 영상의 발전에도 불구하고 단순촬영은 근골격계 질환을 진단하는 데 있어서 기본적이고 중요한 진단 영상이다. 많은 근골격계 질환들은 단순촬영에서 특징적인 영상 소견을 통해 일차적인 진단이 가능하여, 그 자체로도 유용한 진단적 가치가 있다. 그리고 단순촬영은 전산화단층촬영이나 자기공명영상과 같은 정밀검사의 필요성을 결정하는 기본적인 정보를 제공한다. 따라서 영상의학과 의사는 근골격계 질환의 단순촬영 소견을 파악하고 이를 진단하는 데 적용할 수 있도록 해야 한다. 이 종설에서는 하지 근골격계 질환을 진단하는 데 중요한 단순촬영 소견을 다루고자 한다.

국내 · 외 대학평가제도의 비교 분석

한석 한국정책분석평가학회 2019 한국정책분석평가학회 학술대회발표논문집 Vol.2019 No.7

본 연구는 국내 · 외 주요 대학평가제도로 국내는 2주기 대학평가인증제, 산업계 관점 대학평가, 대학 자체평가, 중앙일보 대학평가를 국외는 QS 세계대학평가, QS-조선일보 아시아 대학평가, THE 세계대학평가 그리고 THE 아시아 대학평가를 대상으로 메타평가의 구성요소를 통해 비교 분석하였다. 메타평가의 분석틀은 최원재(2018)의 기관평가제도의 메타평가의 구성요소 분석틀을 재구성하였다. 연구결과, 대학평가에 있어서 신뢰성 확보, 대학별 특성에 맞게 비교할 수 있는 다차원적 순위 산출 방식으로 개선, 대학 규모가 크고 여건이 좋은 대학일수록 순위평가가 잘 나오는 경향 등을 배제할 수 있는 방안 마련, 대학평가의 결과 활용에 있어서 대학들의 인식 개선 필요 등 국내 · 외 주요 대학평가제도의 주요 문제점에 대한 정책적 시사점을 제시하였다.

Analysis of Adjacent Fractures after Two-Level Percutaneous Vertebroplasty: Is the Intervening Vertebral Body Prone to Re-fracture?

한석,장일태 대한척추외과학회 2018 Asian Spine Journal Vol.12 No.3

Study Design: Retrospective study. Purpose: This retrospective study aimed to determine the incidence of adjacent level new fractures in a sandwich constellation (one or two untreated vertebrae between two cemented vertebrae) compared with that in other constellations formed by two-level percutaneous vertebroplasty (PVP). It also aimed to investigate the potential factors contributing to adjacent new fractures in a sandwich constellation. Overview of Literature: There are few studies regarding the intervening intact vertebral body between two cemented vertebrae. Clinical data from previous studies investigation this sandwich situation, too, have been vague. Methods: Clinical data were obtained from 132 patients who had two cemented vertebral bodies, irrespective of whether they had undergone one or two PVP sessions between January 2013 and June 2016 at a single institution. Cases with one or two intact vertebral levels between the two cemented vertebrae were classified into group 1 (n=47), and cases with two consecutive cemented bodies or more than three levels of intervening configurations were classified into group 2 (n=85). Demographic data and radiological parameters for new fractures after PVP were compared between the two groups, and the rates of subsequent adjacent fractures were investigated. Results: The incidence of single-level sandwich constellations was quite uncommon (7.7%). The overall incidences of adjacent fracture were 29.8% (14/47) in group 1 and 14.1% (12/85) in group 2. This difference was statistically significant (p =0.03). Approximately 80% (11/14) of the adjacent new fractures in group 1 developed at an intervening level. The patient demographics and radiological parameters for subsequent fractures after PVP did not statistically correlate with the risk of adjacent new fractures in group 1. Conclusions: Because they were subjected to double-load shifts, sandwich constellations were prone to re-fractures after PVP. These vertebral configurations required more aggressive management for osteoporosis.

Anionic Polymerization of Isocyanate(2) Living Polymerization of 3-(triethoxysilyl)propyl isocyanate

한석,신영득,이재석 한국고분자학회 1998 한국고분자학회 학술대회 연구논문 초록집 Vol.1998 No.4

공동지주막하 단락술을 시행한 척수공동증 환자의 임상분석

한석,김주한,임동준,조태형,박정율,박윤관,정흥섭,서중근 대한신경외과학회 2002 Journal of Korean neurosurgical society Vol.31 No.1

Objective:The aim of this study is to evaluate the effectiveness of the syringo-subarachnoid shunt for the syringomyelia, according to the clinical outcome and radiological changes. Methods:Ten patients who underwent syringo-subarachnoid shunt during last 5 years were included in this analysis. The average age at the presentation was 32.6(range 7 to 51) years. Chiari I malformation was found in four patients, Post-infectious syringomyelia was in three patients, and posttraumatic syringomyelia in two patients. The most common presenting symptoms were motor weakness and pain. Radiological diagnosis was made by magnetic resonance image in all patients. All patients underwent syringo-subarachnoid shunt, and in five patients with Chiari I malformation or achondroplasia, foramen magnum decompression was done as well. Results:Eight showed the significant clinical improvement. Remaining two patients showed stabilization of the symptom. The postoperative magnetic resonance image, performed in seven cases, showed the reduction of the syrinx size in all case. There was no shunt malfunction or infection in our series. The transient cerebospinal fluid leakage was noted in three cases. Conclusion:It appears that the syringo-subarachnoid shunt is beneficial surgical method for the syringomyelia of various etiologies. Key words:Syringo-subarachnoid shunt;Syringomyelia. 척수공동증에서 단락술 J Korean Neurosurg Soc/Volume 31/January, 2002 26 26. Ventureyra, Enrique CG,Tekkok Ismail H:Syringotomy using myringotomy tube:technical note. Neurosurgery 41 :495-497, 1997 27. Vernet O, Farmer JP, Montes JL:Comparison of syringopleural

Anionic Polymerization of Isocyanates (4)

한석,류상욱,김선영,이재석 한국고분자학회 1998 한국고분자학회 학술대회 연구논문 초록집 Vol.1998 No.10

Discrepancy between Fluoroscopic Arthrography and Magnetic Resonance Arthrography in Patients with Arthroscopically Confirmed Supraspinatus Tendon Tears: The Additional Benefit of Cine Fluoroscopic Arthrography Images

한석,이영한,서진석 대한영상의학회 2016 대한영상의학회지 Vol.75 No.6

Purpose: To determine the additional diagnostic benefits of fluoroscopic arthrography (FA) in patients with full-thickness supraspinatus tendon (SST) tears by comparing FA images with magnetic resonance arthrography (MRA) images. Materials and Methods: This study included FA and MRA images of 53 patients who were confirmed to have full-thickness SST tears by arthroscopy. In the FA analysis, the presence of contrast leakage into the subacromial-subdeltoid bursa was recorded. In the MRA analysis, contrast leakage, retraction of a torn tendon, width and length of the tear, and supraspinatus atrophy were evaluated. Patients were divided into the concordant group or the discordant group based on the presence of contrast leakage to compare the characteristics of SST tears. We used Fisher’s exact test and two-sample t-test for the comparison. Results: Of the 53 patients, 34 were included in the concordant group and 19 were included in the discordant group. In the concordant group, the grades of retraction were higher than those in the discordant group; the width and length of the tears were larger. Muscle atrophy was more severe in the concordant group. Conclusion: A full-thickness SST tear did not always exhibit contrast leakage on FA, particularly small SST tears or tears with low-grade retraction. FA can provide diagnostic information regarding the severity of full-thickness SST tears by itself.