1.Myoepithelioma of the Lacrimal Gland.
Su Yeon KANG ; Myung Jin KIM ; Hyu Sun CHOI ; Sung Joo KIM
Journal of the Korean Ophthalmological Society 2005;46(7):1217-1221
PURPOSE: Myoepithelioma of the lacrimal gland is an extremely rare monomorphic adenoma. We report a case of myoepithelioma of the lacrimal gland. METHODS: A 34-year-old woman visited with an asymptomatic palpable mass on the left upper lid for a year. On ophthalmic examination, the visual acuity was 20/20 in both eyes and other ophthalmic examinations were unremarkable. Computed tomographic scan revealed a well-circumscribed, low-attenuated mass lesion in the lacrimal gland. The mass was excised and histopathologic examination and immunohistochemical staining were performed. RESULTS: The lesion consisted of a brown mass, up to 1.5 x 1.0 x 1.0 cm. Histopathologically, there were round, ovoid nuclei associated with an interstitial hyaline deposition. Immunohistochemical staining was strongly positive for S-100 protein and vimentin, intermediately positive for cytokeratin and smooth muscle actin, and negative for glial fibrillary acid protein. Recurrence of the neoplasm was not observed during 5 months of follow-up after surgery. CONCLUSIONS: The case was diagnosed with myoepithelioma of the lacrimal gland on the basis of clinical and histopathological findings. Myoepithelioma of the lacrimal gland is very rare and only a few cases have been reported.
Female
;
Humans
2.Anti-NMDA Receptor Encephalitis Which Has Shown Clinical Symptoms of Schizophrenia.
Hyung Seok LEE ; Seung Woo KIM ; Seok Jong CHUNG ; Han Soo YOO ; Phil Hyu LEE ; Sun Ah CHOI
Journal of the Korean Neurological Association 2013;31(2):115-117
Encephalitis associated with antibodies to the N-methyl-D-aspartate (NMDA) receptor has variable clinical manifestations and treatment responses. Anti-NMDAR encephalitis is often associated with ovarian teratoma, but some cases without tumor have been reported. Here, we describe a patient who has shown psychiatric symptoms, memory impairment and been diagnosed as schizophrenia for one year and had anti-NMDA receptor antibody. The patient showed atypical clinical course compared to previous cases with anti-NMDA receptor encephalitis.
Anti-N-Methyl-D-Aspartate Receptor Encephalitis
;
Antibodies
;
Encephalitis
;
Humans
;
Memory
;
N-Methylaspartate
;
Schizophrenia
;
Teratoma
3.Clinical Analysis of Multiple Intracranial Aneurysms.
Sun Ill LEE ; Byung Ook CHOI ; Soo Chun KIM ; Hyung Dong KIM ; Soo Hyu KIM ; Jae Hong SIM
Journal of Korean Neurosurgical Society 1988;17(4):639-646
Author reviewed the 31 cases of multiple intracranial aneurysms clinically from January 1981 to July 1987, at Inje College Busan Paik Hospital. The results obtained were as follows: 1) The incidence of multiple intracranial aneurysm was 7.8%. In most cases(94%), the number of aneurysm was two. 2) Approximately over 70% of patients were 6th and 7th decades, male to female ratio was 1:3.4. 3) The location of multiple intracranial aneurysms was in order, on the opposite side(39%), on the same side(26%), one in the midline and one on the side(29%). The location of indivisual aneurysms was in order, P-com. A(36%), MCA(25%), A-com. A(17%), ICA(13%). 4) The site of the ruptured aneurysm was determined by CT finding(55%), focal mass effect and spasm in angiography(29%), and others. The accurary was 97%. The possibility of rupture at each location was A-com. A(73%), P-com. A(57%), ICA(38%), MCA(31%). 5) 12 cases among them were treated with one-stage operation and 9 cases with two-stage operation. The post-operative favorable outcome was estimated in 13 cases(54%), the surgical mortality was 13%. There was no statistical difference between two groups.
Aneurysm
;
Aneurysm, Ruptured
;
Busan
;
Female
;
Humans
;
Incidence
;
Intracranial Aneurysm*
;
Male
;
Mortality
;
Rupture
;
Spasm
4.Clinical Analysis of Multiple Intracranial Aneurysms.
Sun Ill LEE ; Byung Ook CHOI ; Soo Chun KIM ; Hyung Dong KIM ; Soo Hyu KIM ; Jae Hong SIM
Journal of Korean Neurosurgical Society 1988;17(4):639-646
Author reviewed the 31 cases of multiple intracranial aneurysms clinically from January 1981 to July 1987, at Inje College Busan Paik Hospital. The results obtained were as follows: 1) The incidence of multiple intracranial aneurysm was 7.8%. In most cases(94%), the number of aneurysm was two. 2) Approximately over 70% of patients were 6th and 7th decades, male to female ratio was 1:3.4. 3) The location of multiple intracranial aneurysms was in order, on the opposite side(39%), on the same side(26%), one in the midline and one on the side(29%). The location of indivisual aneurysms was in order, P-com. A(36%), MCA(25%), A-com. A(17%), ICA(13%). 4) The site of the ruptured aneurysm was determined by CT finding(55%), focal mass effect and spasm in angiography(29%), and others. The accurary was 97%. The possibility of rupture at each location was A-com. A(73%), P-com. A(57%), ICA(38%), MCA(31%). 5) 12 cases among them were treated with one-stage operation and 9 cases with two-stage operation. The post-operative favorable outcome was estimated in 13 cases(54%), the surgical mortality was 13%. There was no statistical difference between two groups.
Aneurysm
;
Aneurysm, Ruptured
;
Busan
;
Female
;
Humans
;
Incidence
;
Intracranial Aneurysm*
;
Male
;
Mortality
;
Rupture
;
Spasm
5.Analysis of Errors on Death Certificate for Trauma Related Death
Jun Hyuk CHANG ; Sun Hyu KIM ; Hyeji LEE ; Byungho CHOI
Journal of the Korean Society of Traumatology 2019;32(3):127-135
PURPOSE:
This study was to investigate errors of death certificate (DC) issued for patients with trauma.
METHODS:
A retrospective review for DC issued after death related to trauma at a training hospital trauma center was conducted. Errors on DC were classified into major and minor errors depending on their influence on the process of selecting the cause of death (COD). All errors were compared depending on the place of issue of DC, medical doctors who wrote the DC, and the number of lines filled up for COD of DC.
RESULTS:
Of a total 140 DCs, average numbers of major and minor errors per DC were 0.8 and 3.7, respectively. There were a total of 2.8 errors for DCs issued at the emergency department (ED) and 5.4 errors for DCs issued beyond ED. The most common major error was more than one COD on a single line for DCs issued at the ED and incompatible casual relation between CODs for DCs issued beyond ED. The number of major errors was 0.5 for emergency physician and 0.8 for trauma surgeon and neurosurgeon. Total errors by the number of lines filled up for COD were the smallest (3.1) for two lines and the largest (6.0) for four lines.
CONCLUSIONS
Numbers of total errors and major errors on DCs related to trauma only were 4 and 0.8, respectively. As more CODs were written, more errors were found.
6.Characterization of a conjugated polysuccinimide-carboplatin compound
Sun Young LEE ; Chang Hoon CHAE ; Miklós ZRÍNYI ; Xiangguo CHE ; Je Yong CHOI ; Dong-Hyu CHO
The Korean Journal of Physiology and Pharmacology 2023;27(1):31-38
Carboplatin, an advanced anticancer drug with excellent efficacy against ovarian cancer, was developed to alleviate the side effects that often occur with cisplatin and other platinum-based compounds. Our study reports the in vitro characteristics, viability, and activity of cells expressing the inducible nitric oxide synthase (iNOS) gene after carboplatin was conjugated with polysuccinimide (PSI) and administered in combination with other widely used anticancer drugs. PSI, which has promising properties as a drug delivery material, could provide a platform for prolonging carboplatin release, regulating its dosage, and improving its side effects. The iNOS gene has been shown to play an important role in both cancer cell survival and inhibition. Herein, we synthesized a PSI-carboplatin conjugate to create a modified anticancer agent and confirmed its successful conjugation. To ensure its solubility in water, we further modified the structure of the PSI-carboplatin conjugate with 2-aminoethanol groups. To validate its biological characteristics, the ovarian cancer cell line SKOV-3 and normal ovarian Chinese hamster ovary cells were treated with the PSI-carboplatin conjugate alone and in combination with paclitaxel and topotecan, both of which are used in conventional chemotherapy. Notably, PSI-carboplatin conjugation can be used to predict changes in the genes involved in cancer growth and inhibition. In conclusion, combination treatment with the newly synthesized polymer-carboplatin conjugate and paclitaxel displayed anticancer activity against ovarian cancer cells but was not toxic to normal ovarian cancer cells, resulting in the development of an effective candidate anticancer drug without severe side effects.
7.Are Registration of Disease Codes for Adult Anaphylaxis Accurate in the Emergency Department?.
Byungho CHOI ; Sun Hyu KIM ; Hyeji LEE
Allergy, Asthma & Immunology Research 2018;10(2):137-143
PURPOSE: There has been active research on anaphylaxis, but many study subjects are limited to patients registered with anaphylaxis codes. However, anaphylaxis codes tend to be underused. The aim of this study was to investigate the accuracy of anaphylaxis code registration and the clinical characteristics of accurate and inaccurate anaphylaxis registration in anaphylactic patients. METHODS: This retrospective study evaluated the medical records of adult patients who visited the university hospital emergency department between 2012 and 2016. The study subjects were divided into the groups with accurate and inaccurate anaphylaxis codes registered under anaphylaxis and other allergy-related codes and symptom-related codes, respectively. RESULTS: Among 211,486 patients, 618 (0.29%) had anaphylaxis. Of these, 161 and 457 were assigned to the accurate and inaccurate coding groups, respectively. The average age, transportation to the emergency department, past anaphylaxis history, cancer history, and the cause of anaphylaxis differed between the 2 groups. Cutaneous symptom manifested more frequently in the inaccurate coding group, while cardiovascular and neurologic symptoms were more frequently observed in the accurate group. Severe symptoms and non-alert consciousness were more common in the accurate group. Oxygen supply, intubation, and epinephrine were more commonly used as treatments for anaphylaxis in the accurate group. Anaphylactic patients with cardiovascular symptoms, severe symptoms, and epinephrine use were more likely to be accurately registered with anaphylaxis disease codes. CONCLUSIONS: In case of anaphylaxis, more patients were registered inaccurately under other allergy-related codes and symptom-related codes rather than accurately under anaphylaxis disease codes. Cardiovascular symptoms, severe symptoms, and epinephrine treatment were factors associated with accurate registration with anaphylaxis disease codes in patients with anaphylaxis.
Adult*
;
Anaphylaxis*
;
Clinical Coding
;
Consciousness
;
Emergencies*
;
Emergency Service, Hospital*
;
Epinephrine
;
Humans
;
International Classification of Diseases
;
Intubation
;
Medical Records
;
Neurologic Manifestations
;
Oxygen
;
Retrospective Studies
;
Transportation
8.Concordance between the underlying causes of death on death certificates written by three emergency physicians
Hyeji LEE ; Sun Hyu KIM ; Byungho CHOI ; Minsu OCK ; Eun Ji PARK
Clinical and Experimental Emergency Medicine 2019;6(3):218-225
OBJECTIVE: This study was conducted to evaluate the concordance between the underlying causes of death (UCOD) on the death certificates written by three emergency physicians (EPs). We investigated errors on the death certificates committed by each EP.METHODS: This study included 106 patients issued a death certificate in the emergency department of an academic hospital. Three EPs reviewed the medical records retrospectively and completed 106 death certificates independently. The selection of the UCOD on the death certificates by each EP (EP-UCOD) was based on the general principle or selection rules. The gold standard UCOD (GS-UCOD) was determined for each patient by unanimous consent between three EPs. We also compared between the EP-UCOD and the GS-UCOD. In addition, we compared between UCODs of three EPs. The errors on the death certificates were investigated by each EP.RESULTS: The rates of concordance between EP-UCOD and the GS-UCOD were 86%, 81%, and 67% for EP-A, EP-B, and EP-C, respectively. The concordance rates between EP-A and EP-B were the highest overall percent agreement (0.783), and those between EP-A and EP-C were the lowest overall percent agreement (0.651). Although each EP had differences in the errors they committed, none of them listed the mode of dying as UCOD.CONCLUSION: This study confirmed that each EP wrote death certificates indicating different causes of death for the same decedents; however, the three EPs made fewer errors on the patients’ death certificates compared with those reported in previous studies.
Cause of Death
;
Death Certificates
;
Emergencies
;
Emergency Medicine
;
Emergency Service, Hospital
;
Humans
;
Medical Records
;
Mortality
;
Retrospective Studies
9.Accuracy of Disease Codes Registered for Anaphylaxis at Emergency Department.
Jin Kyun CHOI ; Sun Hyu KIM ; Hyeji LEE ; Byungho CHOI ; Wook jin CHOI ; Ryeok AHN
Journal of The Korean Society of Clinical Toxicology 2017;15(1):24-30
PURPOSE: This study was conducted to investigate the frequency and clinical characteristics of anaphylaxis patients who are registered inaccurately with other disease codes. METHODS: Study subjects presenting at the emergency department (ED) were retrospectively collected using disease codes to search for anaphylaxis patients in a previous studies. The study group was divided into an accurate and inaccurate group according to whether disease codes were accurately registered as anaphylaxis codes. RESULTS: Among 266 anaphylaxis patients, 144 patients (54%) received inaccurate codes. Cancer was the most common comorbidity, and the radio-contrast media was the most common cause of anaphylaxis in the accurate group. Cutaneous and respiratory symptoms manifested more frequently in the inaccurate group, while cardiovascular and neurological symptoms were more frequent in the accurate group. Blood pressure was lower, and shock and non-alert consciousness were more common in the accurate group. Administration of intravenous fluid and epinephrine use were more frequent in the accurate group. Anaphylaxis patients with a history of cancer, shock, and epinephrine use were more likely to be registered as anaphylaxis codes accurately, but patients with respiratory symptoms were more likely to be registered with other disease codes. CONCLUSION: In cases of anaphylaxis, the frequency of inaccurately registered disease codes was higher than that of accurately registered codes. Anaphylaxis patients who were not treated with epinephrine at the ED who did not have a history of cancer, but had respiratory symptoms were at increased risk of being registered with disease codes other than anaphylaxis codes.
Anaphylaxis*
;
Blood Pressure
;
Comorbidity
;
Consciousness
;
Emergencies*
;
Emergency Service, Hospital*
;
Epinephrine
;
Humans
;
International Classification of Diseases
;
Retrospective Studies
;
Shock
10.Dysembryoplastic Neuroepithelial Tumor: A Case Report.
Kyu Hong KIM ; Ki Uk KIM ; Jae Woo KIM ; Sun Seob CHOI ; Seo Hee RHA ; Hyun Chul SHIN ; Hyu Jin CHOI ; Hyung Dong KIM
Journal of Korean Neurosurgical Society 1998;27(1):98-103
We report the case of a 12 year old boy with a dysembryoplastic neuroepithelial tumor(DNT) of the left frontal lobe. Only recently recognized, this tumor is an uncommon neurosurgical lesion of adolescents and young adults, one with a benign clinical course and a long history of intractable partial complex seizures. DNT was first proposed by Daumas-Duport et al. and in the revised WHO histological classification, has recently been incorporated into the category of neuronal and mixed neuronal-glial tumors. Since the first description, there have been a few additional case reports of DNTs, including histological and radiological findings. Owing to the supratentorial and intracortical location of this tumor, and its association with cortical dysplasia, the onset of seizure is often early, either in childhood or adolescence. Unlike other dysgenetic lesions and some glial tumors, the prognosis after resection is thought-as far as seizure control is concerned-to be excellent. Identification of these neoplasms is of obvious therapeutic importance because it spares these young patients the deleterious long term effects of radio-or chemotherapy.
Adolescent
;
Child
;
Classification
;
Drug Therapy
;
Frontal Lobe
;
Humans
;
Male
;
Malformations of Cortical Development
;
Neoplasms, Neuroepithelial*
;
Neurons
;
Prognosis
;
Seizures
;
Young Adult