1.Validation of Electronic Foot Function Index in Patients with Foot and Ankle Disease: A Randomized, Prospective Multicenter Study
Dong Yeon LEE ; Yu Mi KIM ; Jun Hyung LEE ; Jin KIM ; Ji Beom KIM ; Bom Soo KIM ; Gi Won CHOI ; Sang Gyo SEO ; Jun Beom KIM ; Se Jin PARK ; Yoon Chung KIM ; Young Rak CHOI ; Dong Oh LEE ; Jae Ho CHO ; Dong Il CHUN ; Hyong Nyun KIM ; Jae Yong PARK
Journal of Korean Foot and Ankle Society 2019;23(1):24-30
PURPOSE: To evaluate the efficiency of the electronic foot function index (eFFI) through a prospective, random based, multi-institutional study. MATERIALS AND METHODS: The study included 227 patients ranging in age from 20 to 79 years, visited for surgery in different 15 institutes, and agreed to volunteer. The patients were assigned randomly into a paper-based evaluated group (n=113) and tablet-based evaluated group (n=114). The evaluation was done on the day of hospital admission and the method was changed on the second day of surgery and re-evaluated. PADAS 2.0 (https://www.proscore.kr) was used as an electronic evaluation program. RESULTS: There were no differences in age and sex in both groups. The intraclass correlation coefficient (ICC) evaluation revealed an eFFI ICC of 0.924, showing that both results were similar. The evaluation time was shorter in the tablet-based group than the paper-based group (paper vs tablet, 3.7±3.8 vs 2.3±1.3 minutes). Thirty-nine patients (17.2%) preferred to use paper and 131 patients (57.7%) preferred the tablet. Fifty-seven patients (25.1%) found both ways to be acceptable. CONCLUSION: eFFI through tablet devices appears to be more constant than the paper-based program. In addition, it required a shorter amount of time and the patients tended to prefer the tablet-based program. Overall, tablet and cloud system can be beneficial to a clinical study.
Academies and Institutes
;
Ankle
;
Clinical Study
;
Foot
;
Humans
;
Methods
;
Prospective Studies
;
Volunteers
2.PI3K-Akt-Wnt Pathway Is Implicated in Exercise-Induced Improvement of Short-term Memory in Cerebral Palsy Rats.
Jung Wan CHO ; Sun Young JUNG ; Dae Young KIM ; Yong Rak CHUNG ; Hyun Hee CHOI ; Jung Won JEON ; Jin Hee HAN
International Neurourology Journal 2018;22(Suppl 3):S156-S164
PURPOSE: Maternal lipopolysaccharide (LPS) injection induces neurodevelopmental disorders, such as cerebral palsy. Exercise activates phosphatidylinositol 3-kinase (PI3K)-protein kinase B (Akt) signaling pathway that enhances neurogenesis. Wnt ligands are also implicated in the hippocampal neurogenesis and synaptic plasticity. Glycogen synthase kinase-3β (GSK-3β) is a downstream molecule of Akt, and GSK-3β is known to modulate hippocampal neurogenesis negatively. METHODS: Cerebral palsy was made by maternal LPS-injection. On the 5 weeks after birth, treadmill running was applied to the rat pups of the exercise groups, for 30 minutes, 5 times a week during 6 weeks. RESULTS: Treadmill running alleviated short-term memory impairments of the cerebral palsy rat pups. Hippocampal cell proliferation was increased and hippocampal apoptosis was suppressed by treadmill running in the cerebral palsy rat pups. Hippocampal phosphorylated-PI3K/PI3K ratio, phosphorylated-Akt/Akt ratio, and Wnt expression were enhanced by treadmill running in the cerebral palsy rat pups. In contrast, hippocampal phosphorylated-GSK-3β/GSK-3β ratio and β-catenin expression were suppressed by treadmill running in the cerebral palsy rat pups. CONCLUSIONS: The results of this study showed that short-term memory improvement due to treadmill running in cerebral palsy occurs via activation of the PI3K-Akt-Wnt pathway.
Animals
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Apoptosis
;
Cell Proliferation
;
Cerebral Palsy*
;
Glycogen Synthase
;
Ligands
;
Memory, Short-Term*
;
Neurodevelopmental Disorders
;
Neurogenesis
;
Neuronal Plasticity
;
Parturition
;
Phosphatidylinositol 3-Kinase
;
Phosphotransferases
;
Proto-Oncogene Proteins c-akt
;
Rats*
;
Running
3.Survey of Clinical Laboratory Practices for 2015 Middle East Respiratory Syndrome Coronavirus Outbreak in the Republic of Korea.
Mi Kyung LEE ; Sinyoung KIM ; Mi Na KIM ; Oh Joo KWEON ; Yong Kwan LIM ; Chang Seok KI ; Jae Seok KIM ; Moon Woo SEONG ; Heungsup SUNG ; Dongeun YONG ; Hyukmin LEE ; Jong Rak CHOI ; Jeong Ho KIM
Annals of Laboratory Medicine 2016;36(2):154-161
BACKGROUND: It is crucial to understand the current status of clinical laboratory practices for the largest outbreak of Middle East respiratory syndrome coronavirus (MERS-CoV) infections in the Republic of Korea to be well prepared for future emerging infectious diseases. METHODS: We conducted a survey of 49 clinical laboratories in medical institutions and referral medical laboratories. A short questionnaire to survey clinical laboratory practices relating to MERS-CoV diagnostic testing was sent by email to the directors and clinical pathologists in charge of the clinical laboratories performing MERS-CoV testing. The survey focused on testing volume, reporting of results, resources, and laboratory safety. RESULTS: A total of 40 clinical laboratories responded to the survey. A total of 27,009 MERS-CoV real-time reverse transcription PCR (rRT-PCR) tests were performed. Most of the specimens were sputum (73.5%). The median turnaround time (TAT) was 5.29 hr (first and third quartile, 4.11 and 7.48 hr) in 26 medical institutions. The median TAT of more than a half of the laboratories (57.7%) was less than 6 hr. Many laboratories were able to perform tests throughout the whole week. Laboratory biosafety preparedness included class II biosafety cabinets (100%); separated pre-PCR, PCR, and post-PCR rooms (88.6%); negative pressure pretreatment rooms (48.6%); and negative pressure sputum collection rooms (20.0%). CONCLUSIONS: Clinical laboratories were able to quickly expand their diagnostic capacity in response to the 2015 MERS-CoV outbreak. Our results show that clinical laboratories play an important role in the maintenance and enhancement of laboratory response in preparation for future emerging infections.
Clinical Laboratory Services/*standards
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Clinical Laboratory Techniques/instrumentation/methods
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Coronavirus Infections/*diagnosis/epidemiology/virology
;
Disease Outbreaks
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Humans
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Middle East Respiratory Syndrome Coronavirus/genetics/isolation & purification
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RNA, Viral/analysis
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Real-Time Polymerase Chain Reaction
;
Republic of Korea/epidemiology
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Sputum/virology
;
Surveys and Questionnaires
4.A Case of Rectal Mucosa-associated Lymphoid Tissue Lymphoma Diagnosed by Endoscopic Unroofing Technique.
Hyeonsu PARK ; Jun Won CHUNG ; Ae Jin KIM ; Soo Yong PARK ; Min Young RIM ; Young Rak JANG ; Jae Hoon LEE ; Sanghui PARK
The Korean Journal of Gastroenterology 2012;59(6):428-432
Mucosa-associated lymphoid tissue (MALT) lymphoma is a typical primary gastrointestinal lymphoma, particularly in the stomach. Although primary rectal lymphoma is rare, it may present as a subepithelial tumor. Several techniques have been proposed for a tissue diagnosis in subepithelial tumor, including endoscopic ultrasonography (EUS)-guided fine needle aspiration (EUS-FNA), EUS-guided trucut biopsy (EUS-TCB), and tacked biopsy. However the diagnostic efficacy of these techniques appears to be limited. The unroofing technique involves removal of the overlying mucosa, thereby exposing the subepithelial lesion. It was originally reported as a method for endoscopic treatment of colorectal lymphangioma. In this case, a subepithelial tumor of the rectum was diagnosed using the endoscopic unroofing technique. This is a useful modality for the diagnosis of subepithelial tumor, because it provides histologic results in a safe and rapid manner.
Adult
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Antigens, CD20/metabolism
;
Colonoscopy
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Humans
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Immunohistochemistry
;
Intestinal Mucosa/surgery
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Lymphoma, B-Cell, Marginal Zone/*diagnosis/pathology/ultrasonography
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Male
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Rectal Neoplasms/*diagnosis/pathology/ultrasonography
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Tomography Scanners, X-Ray Computed
5.Application of 3D Surface Scanners in Forensic Science and Medicine ( I ): Digital Storage of Human Skeletons and Development of Appraisal Methods for Incident Scenes.
Nak Eun CHUNG ; Hyung Nam KOO ; Hyun Moo KANG ; Sang Seob LEE ; Hye Jin PARK ; Hyung Joong KIM ; Kyung Rak LEE ; Ik Jo CHUNG ; Dae Yeol KIM ; Dal Won KIM ; Sang Beom LIM ; Saebomi LEE ; Han Soo HAN ; Jung LEE ; Jun Suk KIM ; Ki Woong MOON ; Byong Hyun KIM ; Kyun Woo CHO ; Jin Pyeo KIM ; Yeo Soo KIM ; Sung Ho KIM ; In Soo SEO ; Dae Kyun PARK ; Jae Kwang CHUNG ; Yi Suk KIM ; Seong Kyu CHOI ; U Young LEE ; Hoon LEE ; Chae Keun KIM ; In Soo LEE ; Hoon KANG ; Won Seob KIM ; Dong Kyu KIM ; Dong Soo KIM ; Hyeong Jin CHOI ; Dong Il PARK ; Hong Soon CHOI ; Si Ro KIM ; Yong Seok HEO
Korean Journal of Legal Medicine 2012;36(1):85-96
The aim of this project was to use 3D scanning data collected at incident scenes and various evidence to 1) develop surveying methods based on 3D data consisting of overall and detailed scene evidence, captured by long-range and micros-canner, which can be shared by personnel working in different fields such as forensic medicine, video analysis, physical analysis, traffic engineering, and fire investigation; 2) create digital storage for human skeletons and set the foundation for virtual anthropology; and 3) improve the credibility of 3D evidence by virtual remodeling and simulation of incident scenes and evidence to provide a basis for advanced and high-tech scientific investigation. Two complete skeletons of male and female were scanned using 3D micro-scanner. Each bone was successfully reproduced and assembled in virtual space. In addition, recreating evidence scheduled for invasive examination by creating RP (rapid prototype) was possible. These outcomes could play an important role in setting up the new field of virtual anthropology. Case-specific surveying methods were developed through analysis of 3D scanning data collected by long-range surface scanners at the scenes of vehicular accidents, falls, shootings, and violent crimes. A technique and recording method was also developed for detecting forged seals by micro-scanning the pressure exerted on the seal. Appraisal methods developed in this project could be utilized to secure 3D data of human skeletal remains and incident scenes, create a standard for application, and increase objectivity, reproducibility, and accuracy of scanning methods. We plan to develop case-specific 3D data analysis techniques to improve the credibility of analysis at the NFS and to establish a 3D data collection and analysis team.
Crime
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Data Collection
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Female
;
Fires
;
Forensic Medicine
;
Forensic Sciences
;
Humans
;
Male
;
Skeleton
;
Statistics as Topic
6.Immediate Implant Reconstruction using Silicone Prosthesis in Breast Cancer Patients after Skin Sparing Mastectomy.
Young Kyoo CHO ; Jung Dug YANG ; Gui Rak KIM ; Ho Yun CHUNG ; Byung Chae CHO ; Ho Yong PARK
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2010;37(6):749-757
PURPOSE: Since skin sparing mastectomy removes the mammary gland and the nipple-areolar complex preserving all mammary skin, it makes the widespread use of implants in immediate reconstruction. This article reports our experience in immediate breast reconstruction after skin sparing mastectomy by using the silicone implants in patients especially who have small to moderate sized and minimal ptotic breast. METHODS: From September of 2007 to July of 2009, we performed breast reconstruction for 44 breasts of 40 women with silicone implant after mastectomy. Tumors were divided into 5 malignant types (21 IDC, 18 DCIS, 2 ILC, 2 phylloides tumor, 1 mucinous carcinoma). The implant is placed in a submuscular pocket or in a submuscular-subfascial pocket depending upon the condition of the muscles and skin flaps after mastectomy. RESULTS: The mean age was 47 years and the average follow-up period was 11 months. Cosmetic outcome was assessed by evaluation of photographs and assessment of breast volume and shape, breast symmetry, and overall outcome. About 80% of each of these parameters was scored as good or excellent. Breast complication was developed in a total of 6 cases including 2 capsular contracture, 2 partial skin necrosis due to blue dye injection and 2 implant infection. CONCLUSION: The use of definitive implants in a skin sparing mastectomy is a one-stage immediate breast reconstruction with low morbidity and acceptable result. This method is considered reliable with favorable aesthetic result.
Breast
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Breast Neoplasms
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Carcinoma, Intraductal, Noninfiltrating
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Contracture
;
Cosmetics
;
Female
;
Follow-Up Studies
;
Humans
;
Mammaplasty
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Mammary Glands, Human
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Mastectomy
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Mucins
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Muscles
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Necrosis
;
Prostheses and Implants
;
Silicones
;
Skin
7.Chest Wall Reconstruction with Thoracoabdominal Flap for Large Skin Defects after Mastectomy of Advanced Breast Cancer.
Hak Tae KIM ; Jung Dug YANG ; Ho Yun CHUNG ; Byung Chae CHO ; Gui Rak KIM ; Kang Young CHOI ; Jung Hun LEE ; Ho Yong PARK
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2010;37(6):736-741
PURPOSE: Radical surgical extirpation in advanced breast cancer patients produces extensive loss of skin with large defects requiring plastic surgical procedures for the closure. Many reconstructive methods exist, the choice of which depends upon the characteristic of the wound, extent of resection and patient comorbidities. For adequate coverage of the large skin defects following resection of advanced breast cancer, current authors have performed a thoracoabdominal flap. METHODS: From August 2008 to June 2009, 4 cases of thoraco-abdominal flap were performed for chest wall reconstruction after mastectomy of advanced breast cancer. Flap dissection was entirely performed in a subfascial plane and the flap involving the external oblique abdominal muscle. The flap was rotated clockwise in left chest wall defects and counterclockwise in right chest defects and the donor site was closed directly. RESULTS: Their mean age, 55.7 years and the average follow-up interval was 9 months. Patients' oncologic status ranged from stage IIIc to stage IV, it was classified according to the TNM staging system. Flap dimensions ranged between 15 x 15 and 25 x 25 cm. One flap sustained a partial loss at the distal margin and revision with pectoralis major musculocutaneous island flap. CONCLUSION: Large chest wall reconstructions are usually required after radical excision of advanced cancer stages patients with poor general conditions. Thoracoabdominal flap is a simple, quick single-stage procedure, and offer to patient fast recovery, low complication rate, enabling further concomitant adjuvant therapy.
Abdominal Muscles
;
Breast
;
Breast Neoplasms
;
Comorbidity
;
Follow-Up Studies
;
Humans
;
Mastectomy
;
Neoplasm Staging
;
Skin
;
Thoracic Wall
;
Thorax
;
Tissue Donors
8.Corneal Melting and Descemetocele Resulting From Noninfectious Keratitis Related to the Cosmetic Contact Lenses.
Tae Hyung LIM ; Jong Rak LEE ; Kee Yong CHOI ; Kyu Hyung CHUNG ; Beom Jin CHO
Journal of the Korean Ophthalmological Society 2009;50(5):774-778
PURPOSE:To report 2 cases of corneal melting and corneal melting with descemetocele that occurred in users of cosmetic contact lenses. CASE SUMMARY: A-12-year-old and a 13-year-old female who used cosmetic contact lenses were referred to our clinic under the preliminary diagnosis of keratitis and corneal melting. The patients had purchased the lenses from an optician and had worn the lenses for approximately 1 month without being educated on their proper use. The signs and symptoms improved after 2 weeks of treatment with oral steroid and 1% topical prednisolone acetate. However, descemetocele occurred in the 12-year-old patient. Reepithelization of the cornea had been completed within the treatment period. However, corneal thinning with mild opacity remained in the lesions, and the best corrected visual acuities on the Snellen chart were 20/30 in both patients.
Adolescent
;
Child
;
Contact Lenses
;
Cornea
;
Cosmetics
;
Female
;
Freezing
;
Humans
;
Keratitis
;
Prednisolone
;
Visual Acuity
9.Indications and Prognostic Factors of Groin Flap for Reconstruction of the Extremities.
Boram KIM ; Soo Bong HAHN ; Ho Chung KANG ; Yun Rak CHOI ; Sun Yong KIM
Journal of the Korean Microsurgical Society 2009;18(2):41-48
There are several advantages for groin flap, but its small and unpredictable vessels of pedicle have made it to lose its initial popularity. Although it would be ideal flap when it is focused on its useful advantages such as relative larger size, low donor site morbidity and possible bone graft, there have been few studies for prognostic factors for successful groin flap. Authors intended to determine prognostic factors which are relative with success of free groin flap. From January 1985 to December 2007, 107 patients who underwent groin flap for reconstruction of extremities were selected consecutively. Univariate and multivariate analysis were performed to determine prognostic factors which were related with success of groin flap. Eighty of 107 (74.8%) flaps survived. There was significant difference in success rate according to the recipient site. Nineteen of 20 cases (95%) survived in upper extremities, but 61 of 87 cases (70.1%) survived in lower extremities, which was statistically significant (p=0.022). Univariate analysis showed that mean diameter of donor veins was significantly larger in success group (p=0.021). Groin flap is recommended for reconstruction of upper extremities than lower extremities. It is thought to be critical that surgeons try to match vessel diameters between donor and recipient site.
Extremities
;
Glycosaminoglycans
;
Groin
;
Humans
;
Lower Extremity
;
Multivariate Analysis
;
Tissue Donors
;
Transplants
;
Upper Extremity
;
Veins
10.Pedunculated subpleural lipoma with incomplete torsion: A case report.
Hyoung Jong KWAK ; Eun Jung CHA ; Kyung Rak SOHN ; Ja Hong KUH ; Gong Yong JIN ; Myoung Ja CHUNG ; Kyu Yun JANG
Korean Journal of Medicine 2008;74(6):676-679
Lipoma is a common benign neoplasm, but lipoma arising from the pleura is rare. Most pleural lipomas are asymptomatic and are discovered incidentally on chest radiographs. Here we report an unusual case of a pedunculated subpleural lipoma with incomplete torsion in a 29-year-old woman who presented with flank pain. On chest radiography, there was a well-defined, ellipsoidal, homogeneous, radioopaque mass in the left lower lobe. An intrathoracic tumor was suspected, and video-assisted thoracic surgery was performed to establish the final diagnosis. The resected tumor was a 10 X 5 cm sized pedunculated pleural mass. The cut surface showed a yellow, well-circumscribed mass with areas of hemorrhage. Histologically, the tumor was composed of mature adipose tissue with fibrous septae composed of fibroblasts. The outer surface of the tumor was covered by mesothelial cells. Some areas were hypercellular, and occasional mitoses were found, but neither lipoblasts nor atypical mitoses were identified.
Adipose Tissue
;
Adult
;
Benzeneacetamides
;
Female
;
Fibroblasts
;
Flank Pain
;
Hemorrhage
;
Humans
;
Lipoma
;
Mitosis
;
Piperidones
;
Pleura
;
Thoracic Surgery, Video-Assisted
;
Thorax

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