1.Congenital Giant Pigmented Nevus with Malignant Melanoma of Brain.
Dong Hoon SHIN ; Hyun Suk KIM ; Jong Soo CHOI ; Ki Hong KIM ; Soo Ho JO
Korean Journal of Dermatology 1989;27(6):772-776
We report a case of congenital giant pigmented nevus with malignant melanoma of brain in a 14-year-old male patient. He had giant pigmented nevus on the back and neck, and multiple satellite lesions over the whole body since birth. One year prior to visit to our hospital, the patient suffered from various neurologie symptoms including headache, nausea, vomiting, seizure and right side motor weakness. Flistologic findings of skin lesions were benign nevocytic nevi. Computed tomogram of brain demonstrated increased densities in the both fronto-parietal leptameninges and brain parenchyme. Histologic findings of brain parenchyme by stereotaxic long needle biopsy showed the infiltration of melanin containing atypical melanocytes. There was no evidence of malignant melanoma at other organs. All of these findings suggested that origin of malignant melanoma of brain parenchyme was leptomeninges rather than skin.
Adolescent
;
Biopsy, Needle
;
Brain*
;
Headache
;
Humans
;
Male
;
Melanins
;
Melanocytes
;
Melanoma*
;
Nausea
;
Neck
;
Nevus
;
Nevus, Pigmented*
;
Parturition
;
Seizures
;
Skin
;
Vomiting
2.Divergence of the Interference Screw and Clinical Outcome in Arthroscopic ACL Reconstruction.
Sang Hoon LEE ; Sang Cheol SEONG ; Dong Yeon LEE ; Hyun Chul JO ; Myung Chul LEE
Journal of the Korean Knee Society 2001;13(2):177-183
No Abstract Available.
3.Immunochemical Study on the Changes of Carbonic anhydrase-II and Iron-binding Proteins in the Demyelinationand and Remyelination model Mouse induced with Cuprizone.
Gyung Hoon LEE ; Hwa Young LEE ; Young Bok YOO ; Dong Hoon SHIN ; Sang Ho BAEK ; Sa Sun JO
Korean Journal of Anatomy 1997;30(6):683-694
O1igodendrocytes are known to be responsible for the synthesis and maintenance of myelin sheath in the central nervous system, and their functional disturbance leads to defect in myelination. But, the fine mechanism of myelination by oligodendrocytes is not yet known, and iron metabolism in central nervous system is suspected to be related with myelination process by oligodendrocytes. Carbonic anhydrase-II[CA-II], transfe-rrin, and ferritin are known to be present at oligodendrocytes and suspected to play a role in iron metabolism of central nervous system. In this study, demyelination and remyelination of ICR mouse brains were induced using cuprizone, the copper-chelating agent, and immunohistochemical changes of CA-II-, transferrin-, and ferritin-immunoreactive oligodendrocytes at corpus callosum were observed. During demyelination by cuprizone feeding, the numbers of CA-II- and transferrin-immunoreactive oligodendrocytes were decreased. Especially, the decrease ratio of CA-II-positive cells was great. In contrast, the number of ferritin-positive oligodendrocytes was increased during demyelination by cuprizone feeding. Cessation of cuprizone feeding leaded remyelination and the numbers of CA-II-, transferrin-, and ferritin-immunoreactive oligodendrocytes were returned to normal level. In conclusion, the derangement of iron metabolism in oligodendrocytes may be related to demyelination mechanism of central nervous system, and the CA-II is suspected to have an important role in iron metabolism of oligodenrocytes in relation to demyelination and remyelination induced with cuprizone.
Animals
;
Brain
;
Carbon*
;
Central Nervous System
;
Corpus Callosum
;
Cuprizone*
;
Demyelinating Diseases
;
Ferritins
;
Iron
;
Iron-Binding Proteins*
;
Metabolism
;
Mice*
;
Mice, Inbred ICR
;
Myelin Sheath
;
Oligodendroglia
;
Transferrin
4.Multilevel Dumbbell Tumor of the Posterior Mediastinum: 1 Case Report.
Dong Myung HUH ; Byung Ho KIM ; Jae Hoon JO ; Dong Gee KANG
The Korean Journal of Thoracic and Cardiovascular Surgery 1999;32(8):768-771
A 45 year old man was admitted for further examination of an abnormal shadow of the right posterior mediastinum. The patient suffered from dysesthesia in the right thoracic wall of dermatome T7. CT scan and MRI revealed that two separate tumors had developed in the right paravertebral area linked to the vertebral canal via an intervertebral foramina. One-stage removal of the tumors were performed safely through the right posterolateral thoracotomy following the resection of the rib head and vertebral pedicle. The tumors were confirmed as histologically neurilemomas. The postoperative course was uneventful.
Head
;
Humans
;
Magnetic Resonance Imaging
;
Mediastinal Neoplasms
;
Mediastinum*
;
Middle Aged
;
Neurilemmoma
;
Paresthesia
;
Ribs
;
Thoracic Wall
;
Thoracotomy
;
Tomography, X-Ray Computed
5.Near-Infrared Contrast Agents for Bone-Targeted Imaging
Jin Seok JUNG ; Danbi JO ; Gayoung JO ; Hoon HYUN
Tissue Engineering and Regenerative Medicine 2019;16(5):443-450
BACKGROUND: For the bone-specific imaging, a structure-inherent targeting of bone tissue recently has been reported a new strategy based on incorporation of targeting moieties into the chemical structure of near-infrared (NIR) contrast agents, while conventional methods require covalent conjugation of bone-targeting ligands to NIR contrast agents. This will be a new approach for bone-targeted imaging by using the bifunctional NIR contrast agents. METHODS: The goal of this review is to provide an overview of the recent advances in optical imaging of bone tissue, highlighting the structure-inherent targeting by developing NIR contrast agents without the need for a bone-targeting ligand such as bisphosphonates. RESULTS: A series of iminodiacetated and phosphonated NIR contrast agents for the structure-inherent targeting of bone tissue showed excellent bone-targeting ability in vivo without non-specific binding. Additionally, the phosphonated NIR contrast agents could be useful in the diagnosis of bone metastasis. CONCLUSION: By developing bone-targeted NIR contrast agents, optical imaging of bone tissue makes it very attractive for preclinical studies of bone growth or real-time fluorescence guided surgery resulting in high potential to shift the clinical paradigms.
Bone and Bones
;
Bone Development
;
Contrast Media
;
Diagnosis
;
Diphosphonates
;
Fluorescence
;
Ligands
;
Neoplasm Metastasis
;
Optical Imaging
;
Surgery, Computer-Assisted
6.The Development of On-Line Statistics Program for Radiation Oncology.
Yoon Jong KIM ; Dong Hoon LEE ; Young Hoon JI ; Dong Han LEE ; Chul Ku JO ; Mi Sook KIM ; Sung Rul RU ; Seung Hong HONG
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2001;19(4):369-380
PURPOSE: By developing on-line statistics program to record the information of radiation oncology to share the information with internet. It is possible to supply basic reference data for administrative plans to improve radiation oncology. MATERIALS AND METHODS: The information of radiation oncology statistics had been collected by paper forms about 52 hospitals in the past. Now, we can input the data by internet web browsers. The statistics program used windows NT 4.0 operation system, Internet Information Server 4.0 (IIS4.0) as a web server and the Microsoft Access MDB. We used Structured Query Language (SQL), Visual Basic, VBScript and JAVAScript to display the statistics according to years and hospitals. RESULTS: This program shows present conditions about man power, research, therapy machines, technics, brachytherapy, clinic statistics, radiation safety management, institution, quality assurance and radioisotopes in radiation oncology department. The database consists of 38 inputs and 6 outputs windows. Statistical output windows can be increased continuously according to user's need. CONCLUSION: We have developed statistics program to process all of the data in department of radiation oncology for reference information. Users easily could input the data by internet web browsers and share the information.
Brachytherapy
;
Internet
;
Radiation Oncology*
;
Radioisotopes
;
Safety Management
;
Web Browser
7.Comparison of Treatment Methods in Gartland Type III Pediatric Supracondylar Humeral Fracture: Lateral Entry Pin versus Crossed-Pin Technique.
Young Hoon JO ; Tai Seung KIM ; Dong Yun KIM
Journal of the Korean Fracture Society 2015;28(3):186-193
PURPOSE: The aim of this study was to compare the results of the lateral entry pin technique and the crossed pin technique in treatment of Gartland type III humerus supracondylar fracture. MATERIALS AND METHODS: Seventeen patients (group I) underwent surgery using the lateral entry pin technique, and 33 patients (group II) underwent surgery using the crossed pin technique for Gartland type III humerus supracondylar fracture in Hanyang University Seoul Hospital between January 2011 and January 2014. Maintenance of reduction was compared between the 2 surgical techniques by measuring changes in Baumann angle and lateral humerocapitellar angle after surgery and after pin removal in groups I and II. In addition, the final carrying angle and level of loss of functional movement were measured for comparison of clinical results between the 2 groups. Occurrence of ulnar nerve palsy in the 2 groups was also examined. RESULTS: The mean Baumann angle and lateral humerocapitellar angle changes were 3.3degrees and 3.7 in group I and 3.1degrees and 3.4degrees in group II, respectively. No statistically significant differences were found between the 2 groups. Clinical results showed that the changes in the final carrying angle and range of motion were 2.9degrees and 2.6degrees in group I and 2.6degrees and 3.0degrees in group II, respectively, indicating no significant differences between the 2 groups. In terms of nerve damage, 1 patient in group II had temporary iatrogenic ulnar nerve palsy. CONCLUSION: The lateral entry pin technique may be regarded as an appropriate treatment that reduces the risk of iatrogenic ulnar nerve palsy and provides satisfactory results in Gartland type III humerus supracondylar fracture patients.
Humans
;
Humeral Fractures*
;
Humerus
;
Range of Motion, Articular
;
Seoul
;
Ulnar Neuropathies
8.Change of Serum Levels of C-Reactive Protein After Coronary Angioplasty and Its Effects on Clinical Restenosis.
Jong Seon PARK ; Gu Ru HONG ; Chae Hoon LEE ; Dong Gu SHIN ; Young Jo KIM ; Bong Sup SHIM
Yeungnam University Journal of Medicine 2001;18(2):215-225
BACKGROUND: There are many evidences that inflammation is an important determinant of the development of atherosclerosis and one of the systemic markers of inflammation, C-reactive protein(CRP), is associated with extent of coronary artery disease and risk of coronary events. We assessed the time response of CRP response after coronary angioplasty and it's influence on the clinical restenosis in angina patients. MATERIALS AND METHODS: Patients included 36 angina patients undergoing single vessel angioplasty. Levels of CRP were measured before and 12, 24, 48, and 72 hours after angioplasty. Clinical restenosis was assessed at 6 months after procedure. RESULTS: Baseline CRP level was 0.30+/-0.01 mg/dL in stable and 0.46+/-0.28 mg/dL in unstable angina patients(p<0.05). After angioplasty, CRP level was increased with peak at 24 hour and persisted to 72 hours after angioplasty. At 24 hour after angioplasty, the magnitude of CRP change was 0.32+/-0.31 mg/dL in stable and 0.79+/-0.73 mg/dL in unstable angina patient(p<0.05). The change of CRP level was not associated with troponin-T after angioplasty. In unstable angina patients, clinical restenosis was developed in 8% of patients with low baseline CRP levels and in 50% of those with high baseline CRP levels more than 0.6 mg/dL(p<0.05). CONCLUSION: In unstable angina patients, inflammatory response is more increased than stable angina patients, and increased inflammatory response effects on the restenosis after coronary angioplasty.
Angina, Stable
;
Angina, Unstable
;
Angioplasty*
;
Atherosclerosis
;
C-Reactive Protein*
;
Coronary Artery Disease
;
Humans
;
Inflammation
;
Troponin T
9.A Case of Congenital Lobar Emphysema.
Dong Hwan OH ; Eun Sil SHIN ; Jin Guk KIM ; In Hoon LEE ; Byung Do NAM ; Pil Jo CHOI
Journal of the Korean Society of Neonatology 1998;5(1):67-71
Congenital lobar emphysema has the clinical features of an air block' syndrome with- out the evidence of pulmonary infection or intrabronchial foreign body. The hyperinflated lung causes a compression of uninvolved lobes creating respiratory distress, cyanosis within the first weeks of life. We experienced a case of congenital lobar emphysema diagnosed incidentally by chest reontgenogram in an infant with frequent upper respiratory infection within a few weeks of life. Chest X-ray revealed extensive emphysematous changes in the left upper lobe, shifting of heart and medistinum to the right and compression of the right lung. Respiratory distress, cyanosis and chest wall retraction ensued and left upper lobe Lobectomy was performed successfully.
Cyanosis
;
Emphysema*
;
Foreign Bodies
;
Heart
;
Humans
;
Infant
;
Lung
;
Thoracic Wall
;
Thorax
10.Extra-LDH Isoenzyme(LD₆) in Myocardial Infarction with Serious Course: Two cases report.
Kyung Dong KIM ; Myung Sook CHOI ; Chae Hoon LEE ; Chang Ho JEON ; Chung Sook KIM ; Young Jo KIM
Yeungnam University Journal of Medicine 1988;5(2):247-254
Serum lactate dehydrogenase isoenzyme are separated 5 fractions (LD1-LD5) in normal serum by agarose electrophoresis. An unusual band on the cathodic side of LD5 isoenzyme has been found on lactate dehydrogenase electrophoresis is of serum, called LD6, and the presence of which signifies a poor prognosis for the patients of myocardial infarction. In recent, we have experienced LD6 in two patients with myocardial infarction. Cardiac arrest was noted within 24 hours after exhibition of LD6 extra band and they did not recover from their illness.
Electrophoresis
;
Heart Arrest
;
Humans
;
L-Lactate Dehydrogenase
;
Myocardial Infarction*
;
Prognosis
;
Sepharose