1.Case Report of a Severely Chlorophenoxy-Herbicide-Poisoned Patient Treated with Hemodialysis.
Soo Hyeong CHO ; Nam Soo CHO ; Sung Kook KIM
Journal of the Korean Society of Emergency Medicine 2002;13(4):578-581
Chlorophenoxy herbicide poisoning is uncommon, but may produce severe sequelae. It's treatment is primarily the same as that used for poisonings with other drugs; gastric lavage, activated charcoal, etc. However, it's secondary treatment to enhance elimination has two options, alkaline diuresis or hemodialysis. We experienced a patient who had been poisoned with chlorophenoxy herbicide and had severe symptoms like comatose mentation, acute renal failure, rhadomyolysis, etc. The patient was treated by hemodialysis for 5 days and recovered from the acute state.
Acute Kidney Injury
;
Charcoal
;
Coma
;
Diuresis
;
Gastric Lavage
;
Humans
;
Poisoning
;
Renal Dialysis*
2.A Case of Peritoneal Tuberculosis with Elevated Serum CA 125 Level.
Hye Kyung KWON ; Tae Lim JOO ; Soon Mi CHOI ; Kook LEE ; Kwan Sik LEE ; Nam Hoon CHO
Korean Journal of Obstetrics and Gynecology 1997;40(8):1783-1787
Peritoneal tuberculosis is a disease rarely seen nowadays. Its symptoms are easy fatigue, abdominal distension, intermittent abdominal pain and ascites. Its onset is insidious, which si-mulates symptoms of peritonitis or carcinomatosis. Peritoneal tuberculosis should be considered in the differential diagnosis when a Patient's symptoms and signs are ascites, ovarian tumor, vague abdominal pain and abdominal distension with high serum level of CA 125, an antigenic determinant of epithelial ovarian cancers. We have recently experienced a case of peritoneal tuberculosis with markedly elevated serum level of CA 125 in 54 year-old woman and report our case with a brief review of the literature.
Abdominal Pain
;
Ascites
;
Carcinoma
;
Diagnosis, Differential
;
Fatigue
;
Female
;
Humans
;
Middle Aged
;
Ovarian Neoplasms
;
Peritonitis
;
Peritonitis, Tuberculous*
3.Histological classification of chronic myelogenous leukemia : clinicopathologic correlation and prognostic significance.
Nam Yong LEE ; Sung Sup PARK ; Han Ik CHO ; Sang In KIM ; Byoung Kook KIM ; Seon Yang PARK ; Heon KIM
Korean Journal of Clinical Pathology 1993;13(2):197-209
No abstract available.
Classification*
;
Leukemia, Myelogenous, Chronic, BCR-ABL Positive*
4.Carney Complex with Multiple Cardiac Myxomas, Pigmented Nodular Adrenocortical Hyperplasia, Epithelioid Blue Nevus, and Multiple Calcified Lesions of the Testis: A Case Report.
Hyunchul KIM ; Hyun Yee CHO ; Jeong Nam LEE ; Kook Yang PARK
Journal of Pathology and Translational Medicine 2016;50(4):312-314
No abstract available.
Carney Complex*
;
Hyperplasia*
;
Myxoma*
;
Nevus, Blue*
;
Testis*
5.Comparison of Two Internet Based Telepathology Systems: CORBA and ActiveX System.
Byeong il LEE ; Heung Kook CHOI ; Byong Hwan SON ; Sang Hee NAM ; Nam Hoon CHO
Journal of Korean Society of Medical Informatics 2003;9(3):285-295
Telepathology systems will be common systems in hospitals. The two systems were designed and implemented in web environments for test. One was implemented with the Common Object Request Broker Architecture (CORBA) technique. The other system was implemented in the form of ActiveX. The histopathological materials were stained by Hematoxylin and Eosin. By the Donpisha CCD camera attached to an Olympus BX-51 optical microscope 180 color images come to be acquired. For evaluation of the systems, transmission times and telediagnosis concordance rates were measured. Image processing ability was tested using two telepathology systems. For the local area test, system I using CORBA had measured image transmission times of 0.1 s, 0.2 s, and 0.4 s at the file sizes of 100 K byte, 900 K byte and 3.6 M byte respectively. Transmission times for system II using Component Object Model (COM) were slightly slower, ranging from 0.02 s to 0.05 s. In the long distance area test, system II transmission times were 0.5 s, 0.8 s, and 2.0 s. The overall concordance rate of telediagnosis for the 180 images was 78.3%. In this study, we compared our systems about image transmission, and processing for the further development of system configurations.
Eosine Yellowish-(YS)
;
Hematoxylin
;
Internet*
;
Telepathology*
6.Hepatic Veno-occlusive Disease Following Hematopoietic Stem Cell Transplantation in Children: Retrospective Analysis in a Single Institution.
Seok Joo KIM ; Hoon KOOK ; Kyung Ran SON ; Hee Jo BAEK ; Ha Young NOH ; Young Kook CHO ; Jun Seung SUNG ; Ho Song NAM ; Tai Ju HWANG
Korean Journal of Pediatric Hematology-Oncology 2004;11(2):205-216
PURPOSE: Hepatic veno-occlusive disease (VOD) is a life-threatening complication occurring early after stem cell transplantation (SCT). Early diagnosis and effective treatment has not been established in severe VOD. Because there are few reports on VOD in Korean children, we evaluated the clinical characteristics of VOD following SCT in children. METHODS: We retrospectively reviewed the chart of all patients (n=116) receiving SCTs in CNUH Pediatric BMT center between May, 1991 and June, 2004. RESULTS: VOD developed in 11 patients (9.5%) (median age, 9.8 years; range, 2 to 13.9). Underlying diagnoses were ALL (n=3), severe aplastic anemia (n=3), AML (n=2), acute biphenotypic leukemia (n=1), neuroblastoma (n=1), and myelodysplastic syndrome (n=1). The median day of onset of VOD was D+9 (range, D-3 to D+19). VOD was classified as moderate in 5 and severe in 6 cases. Maximum level of serum total bilirubin was 2.9 mg/dL (range, 2.1 to 9.2) in moderate VOD and 7.3 mg/dL in severe VOD (range, 2.0 to 24.2) at D+18 (range, D-5 to D+59). We successfully treated VOD with various combinations including tPA and heparin (2/5, 40%), ursodeoxycholic acid (2/5, 40%), N-acetylcysteine (3/5, 60%), and defibrotide (1/2, 50%). All of 5 patients with moderate VOD survived at D+100 (range, 5.5+ to 66.6+ months). Five of 6 (83%) patients with severe VOD died within first 19 day from complications of VOD. CONCLUSION: This retrospective study showed that the incidence of VOD was 9.5%, and the mortality of severe VOD was still high which would necessitate early diagnosis, effective prevention and treatment.
Acetylcysteine
;
Anemia, Aplastic
;
Bilirubin
;
Child
;
Diagnosis
;
Early Diagnosis
;
Hematopoietic Stem Cell Transplantation*
;
Hematopoietic Stem Cells*
;
Heparin
;
Hepatic Veno-Occlusive Disease*
;
Humans
;
Incidence
;
Leukemia, Biphenotypic, Acute
;
Mortality
;
Myelodysplastic Syndromes
;
Neuroblastoma
;
Retrospective Studies*
;
Stem Cell Transplantation
;
Ursodeoxycholic Acid
7.Multi-transmembrane protein K15 of Kaposi's sarcoma-associated herpesvirus targets Lyn kinase in the membrane raft and induces NFAT/AP1 activities.
Nam Hyuk CHO ; Young Ki CHOI ; Joong Kook CHOI
Experimental & Molecular Medicine 2008;40(5):565-573
Viral proteins of gamma-2 herpesviruses, such as LMP2A of Epstein Barr virus (EBV) and Tip of herpesvirus saimiri (HVS) dysregulate lymphocyte signaling by interacting with Src family kinases. K15 open reading frame of Kaposi's sarcoma associated herpesvirus (KSHV), located at the right end of the viral genome, encodes several splicing variants differing in numbers of transmembrane domains. Previously, we demonstrated that the cytoplasmic tail of the K15 protein interfered with B cell receptor signal transduction to cellular tyrosine phosphorylation and calcium mobilization. However, the detailed mechanism underlying this phenomenon was not understood. In the C-terminal cytoplasmic region of K15, putative binding domains for Src-SH2 and -SH3 were identified. In this study, we attempted to characterize these modular elements and cellular binding protein(s) by GST pull down and co-immunoprecipitation assays. These studies revealed that K15 interacted with the major B cell tyrosine kinase Lyn. In vitro kinase and transient co-expression assays showed that the expression of K15 protein resulted in activation of Lyn kinase activity. In addition, GST pull down assay suggested that the SH2 domain of Lyn alone was necessary for interaction with the C-terminal SH2B (YEEV) of K15, but the addition of Lyn SH3 to the SH2 domain increases the binding affinity to K15 protein. The data from luciferase assays indicate that K15 expression in BJAB cells induced NFAT and AP1 activities. The tyrosine residue in the C-terminal end of K15 required for the Lyn interaction appeared to be essential for NFAT/AP1 activation, highlighting the significance of the C-terminal SH2B of K15 as a modular element in interfering with B lymphocyte signaling through interaction with Lyn kinase.
Cell Line
;
Herpesvirus 8, Human/genetics/*metabolism
;
Humans
;
Immunoblotting
;
Immunoprecipitation
;
Membrane Proteins/genetics/*metabolism
;
NFATC Transcription Factors/genetics/*metabolism
;
Phosphorylation
;
Protein Binding
;
Sarcoma, Kaposi/virology
;
Transcription Factor AP-1/genetics/*metabolism
;
Transfection
;
Viral Proteins/genetics/*metabolism
;
src-Family Kinases/genetics/*metabolism
8.Design of a medical image processing software for clinical-PACS.
Sun Kook YOO ; Kwang Min KIM ; Nam Hyun KIM ; Jae Man HUH ; Byung Chul CHANG ; Bum Koo CHO
Yonsei Medical Journal 1997;38(4):193-201
Software modules for interactive display, manipulation and retrieval of medical images have been designed for a Picture Archiving and Communications System (PACS). The target of these modules is not for a high-end diagnostic workstation for radiologists, but for a PC-based low cost clinical workstation for a referring physician. This software is constructed based on a concept of an object-oriented language which is designed to be modular and expandable. It consists of several functional modules: (a) a communication module for image retrieval, (b) a standard module for the interpretation of the DICOM images, (c) a user interface module for the non-computer oriented clinicians and (d) a tool module for viewing and manipulating images as well as editing the annotation.
Image Processing, Computer-Assisted/instrumentation*
;
Radiology Information Systems*
;
Software*
9.Clinicopathological Features of Retrorectal Tumors in an Adult: A Case Report and Review of the Literatures.
Hye Youn KWON ; Hyuk HUR ; Byung Soh MIN ; Nam Kyu KIM ; Seung Kook SOHN ; Chang Hwan CHO
Journal of the Korean Society of Coloproctology 2008;24(4):292-297
Retrorectal tumors are particularly rare among the adult population, occurring in 1 of 40,000 hospital admissions. Clinical diagnosis is difficult and is often delayed because of vague symptoms. This study aimed to investigate the clinicopathological features of retrorectal tumors. Between January 1999 and March 2005, 10 patients were diagnosed with retrorectal tumors at the Department of Surgery, Yonsei University Medical Center, and their medical records were reviewed. We analyzed chief complaints, imaging studies, surgical approaches and pathologic examinations. Out of 10 patients, 8 were female and 2 were male. The mean age was 42.8 years. Four patients had no symptoms. Perianal and abdominal pain were the most common presentations. CT and MRI were the most frequently performed imaging studies. Surgery was performed in 9 patients. Postoperative pathologic diagnosis was possible in 9 patients. An epidermal cyst was the most common tumor (4 patients); others included a mature teratoma, an adenocarcinoma from a tail gut cyst, a duplication cyst, a neurogenic tumor, and a smooth muscle cell tumor. Imaging techniques like CT scans, MRI and TRUS are helpful to determine the size and the extent of a tumor and its relationship to the surrounding anatomical structures for the operative approach. A surgical resection is the standard of treatment and demonstrates good results and a good prognosis.
Abdominal Pain
;
Academic Medical Centers
;
Adenocarcinoma
;
Adult
;
Epidermal Cyst
;
Female
;
Humans
;
Magnetic Resonance Imaging
;
Male
;
Medical Records
;
Myocytes, Smooth Muscle
;
Prognosis
;
Teratoma
10.Analysis of Factors Affecting the Degree of Difficulty in Total Mesorectal Excision for Rectal Cancer: Investigation of the Factors Affecting Incomplete Resection and the Resection Time.
Seung Hyuk BAIK ; Nam Kyu KIM ; Young Chan LEE ; Seung Kook SOHN ; Chang Hwan CHO
Journal of the Korean Society of Coloproctology 2006;22(4):255-263
PURPOSE: The aim of this study was to estimate the degree of difficulty in total mesorectal excisions (TMEs) for rectal cancer by using statistical methods after analysis of factors affecting the resection time and incomplete resection. METHODS: A total of 63 patients who underwent a total mesorectal excision for rectal cancer were evaluated. MRI pelvimetry data {(transverse diameter (TD), obstetric conjugate (OC), interspinous distance (ID), sacrum length (SL), sacrum depth (SD)}, tumor size (TS), T stage, and body mass index (BMI) were prospectively analyzed. A stepwise multiple regression analysis was performed to determine the operating time prediction equation by using these variables, and the differences in the mean operating time hased on gross evaluations of each specimen were analyzed. RESULTS: A stepwise multiple regression with the operating time as a dependent variable led to the following equation: Operation time (min)=35.726-2.162xTD (cm)-2.324 x OC (cm) + 2.671 x SL (cm) + 1.274 x TS (cm), with r2=0.533 and SEE=5.438. The mean operating time according to a gross evaluation of the TME specimen was 20.0 +/- 7.3 min in complete TME cases (n=42) and 27.9 +/- 7.2 min in incomplete TME cases (n=21) (P<0.001). CONCLUSIONS: MRI pelvimetry data (TD, OC, SL) and tumor size were factors affecting the operation time in TMEs for rectal cancer, and the operating time could be predicted by using the equation of the present study. Also, the mean operating time in incomplete TME cases was longer than that in complete TME cases. Thus, the degree of difficulty of an operation for rectal cancer can be predicted by using these factors.
Body Mass Index
;
Humans
;
Magnetic Resonance Imaging
;
Pelvimetry
;
Prospective Studies
;
Rectal Neoplasms*
;
Sacrum