• Safety and Health at Work
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• v.10 no.3
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• pp.347-354
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• 2019

Background: The aim of this study was to describe the types of diseases that developed in semiconductor workers who have registered with the Korea Workers' Compensation and Welfare Service (KWCWS) and to identify potential common occupational characteristics by the type of claimed disease. Methods: A total of 55 semiconductor workers with cancer or rare diseases who claimed to the KWCWS were compared based on their work characteristics and types of claimed diseases. Leukemia, non-Hodgkin lymphoma, and aplastic anemia were grouped into lymphohematopoietic (LHP) disorder. Results: Leukemia (n = 14) and breast cancer (n = 10) were the most common complaints, followed by brain cancer (n = 6), aplastic anemia (n = 6), and non-Hodgkin lymphoma (n = 4). LHP disorders (n = 24) accounted for 43%. Sixty percent (n = 33) of registered workers (n = 55) were found to have been employed before 2000. Seventy-six percent (n = 42) of registered workers and 79% (n = 19) among the registered workers with LHP (n = 24) were found to be diagnosed at a relatively young age, ${\leq}40years$. A total of 18 workers among the registered semiconductor workers were finally determined to deserve compensation for occupational disease by either the KWCWS (n = 10) or the administrative court (n = 8). Eleven fabrication workers who were compensated responded as having handled wafers smaller than eight inches in size. Eight among the 18 workers compensated (44 %) were found to have ever worked at etching operations. Conclusion: The distribution of cancer and rare diseases among registered semiconductor workers was closely related to the manufacturing era before 2005, ${\leq}8$ inches of wafer size handled, exposure to clean rooms of fabrication and chip assembly operations, and etching operations.

• Biomedical Science Letters
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• v.1 no.1
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• pp.81-88
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• 1995

RDW and MCV are thought to be the highly sensitive blood cell parameters in the differentiation of iron deficiency anemias. Through the medical records of 227 anemic patients and the physical checking results of 143 healthy persons in a General Hospital during the recent five years, the authors evaluated various blood cell parameters including RDW and MCV. Iron deficiency anemia, aplastic anemia and other anemias associated with chronic disease were shown as the three major causes of anemias in Korea. In the patients of iron deficiency anemia MCV was very low(62.9$\pm$13.7fl), while RDW was very high(19.3$\pm$4.8) showing much lower MCV and much higher RDW in severe IDA compared with in mild IDA. To differentiate iron deficiency anemias form other anemias, a discriminant function was developed from some blood cell parameters like MCV, MCH, MCHC, RDW and platelets(D.F.=0.26-0.012MCV -0.130MCH +0.073MCHC +0.052RDW+0.003PLT).

• Pediatric Infection and Vaccine
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• v.13 no.2
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• pp.191-195
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• 2006

Infectious mononucleosis(IM) is a clinical syndrome characterized by fever, exudative tonsillitis, gerneralized lymphadenopathy(90% of cases), splenomegaly(50% of cases), and hepatomegaly(10% of cases). It is mainly caused by Epstein-Barr virus(EBV) and usually recovered completely in the majority of cases. The complications of IM are splenic rupture, pancreatitis, hematologic problems such as hemolytic anemia, aplastic anemia, and thrombocytopenia, neurologic problems such as meningitis, encephalitis, and Guillian-Barr$\acute{e}$ syndrome, myocarditis, parotitis, orchitis, and interstitial pneumonitis, etc. Pulmonary involvement with EBV infection is rare condition reported frequency of 3% to 5%, in addition pleural effusion has been very rarely reported, especially in the pediatric population. We herein report a case of IM with pleural effusion in 3 years old boy with fever, cervical lymphnodes enlargement, and hepato-splenomegaly. And the pleural effusion is spontaneously resolved for a hospitalization period. A brief review of literature is included.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.27 no.1
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• pp.87-91
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• 2001

On patients with disorder of hematopoiesis such as leukemia, aplastic anemia, MDS(Myelodisplastic Syndromes), removal of infectious foci prior to the BMT(Bone Marrow Transplantation) is a necessity and what is more, there is no sufficient time to control the infections because the chemotherapy for BMT should be started as soon as possible. And the transfusion should be minimized to prevent the alloimmunization. In those reasons, oral & maxillofacial surgeons are often in need of multiple extractions, and should take into consideration the possibility of complications after multiples extractions such as infection, severe bleeding because those situations can be fatal on patients with disorder of hematopoiesis. We present our experience in multiple extractions on 30 patients with disorder of hematopoiesis referred from Catholic Hematopoiesis Stem Cell transplantation Center at St. Mary's Hospital, The Catholic University of Korea.

• The Korean Journal of Nuclear Medicine
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• v.7 no.1
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• pp.39-43
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• 1973

The bone marrow scans with colloidal $^{198}Au$ were performed on 33 cases with hematologically normal patients and patients with various blood dyscrasia. Bone marrow aspirations were done at iliac crest in all cases but one. A correlation between the scan findings and an erythroid cellularity was evaluated. The following results were obtained. 1) Out of 33 cases, 23 (about 70%) showed a correlation between $^{198}Au$ marrow uptakes on the scans and the erythroid cellularity. 2) The diseases in which no correlation existed between $^{198}Au$ uptake and erythroid cellularity were aplastic anemia, acute leukemia and chronic myelogenous leukemia.

• Journal of Environmental Health Sciences
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• v.45 no.3
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• pp.203-212
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• 2019

Objective: A total of five students at same middle school were reported to be diagnosed with pediatric leukemia (n=2), non-Hodgkin's lymphoma (NHL, n=1) and aplastic anemia (n=2) between 2016 and 2017. The aims of this study are to assess exposure to environmental hazardous agents known to be associated with the risk of leukemia and to examine whether the environment of school is associated with the risk leukemia. Method: A total of 11 environmental agents causing childhood leukemia were monitored using international certified method in schools where patients had ever attended. Radon & Thoron detector was used to monitor real-time airborne radon and thoron level ($Bq/m^3$). Clinician interviewed two among nine patients who agreed to participate in this study in order to examine the association of demographic and genetic factors by individually. Leukemia, NHL, and aplastic anemia were grouped into lymphohematopoietic disorder (LHP). Results: Except for airborne radon level, no environmental agents in school and household where patients may be exposed were found to higher than recommended airborne level. Clinical investigation found no individual factors that may be associated with the risk of LHP. Higher airborne radon level than Korea EPA's airborne radon criteria ($148Bq/m^3$) was monitored at most of several after-class room of one elementary school, where two leukemia patients graduated. Significant radon level was not monitored at class-room. Significant exposure to radon of patients was not estimated based on time-activity pattern. Conclusions: Our results have concluded that there have been no environmental factors in school and household environment that may be associated the risk of LHP.

• Clinical and Experimental Reproductive Medicine
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• v.30 no.2
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• pp.185-188
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• 2003

Objective: To report tow cases of successful pregnancies following long term cryopreserved spermatozoa prior to bone marrow transplantation (BMT) for chronic myelogenous leukemia (CML) and severe aplastic anemia (SAA). Materials and Methods: Case report. Results: With the first case, after cryopreservation of semen from 25 year-old man with CML prior to BMT, his wife is being pregnant by intracytoplasmic sperm injection (ICSI) using thawed spermatozoa. With the second case, 28 year-old man with SAA became father by ICSI using banked spermatozoa before BMT. Conclusion: These cases support that men with malignancy have the chance of fathering their own genetic children. It is important therefore, to increase the awareness of clinicians especially oncologists and patients themselves to the new developments in preserving fertility for cancer patients.

• Journal of Acupuncture Research
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• v.17 no.4
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• pp.188-199
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• 2000

In the treatment of hemifacial spasm, the operative methods, such as neurovascular decompression, rhizotomy etc. are the most efficacious therapy on its control. But, due to some side effects and complication, pharmacotherapy has been the first attempted by first intention of hemifacial spasm. The cabamazepine is the most commonly used agent, however it is often inefficacious in some cases, and attenuates as the time passes, engages in some symptoms, such as dizziness, nausea, vomiting, and causes an aplastic anemia, it has many deficiencies in becoming the first intention. Acupuncture is a simple, effective and conservative spasm control modality. It is so simple to use in hemifacial spasm. We had observed 5 cases of hemifacial spasm which were treated by acupuncture in our hospital recently. We reported these cases and reviewed related literatures briefly. The results of treatment are as follows : The average grade of spasm intensity classified by Scott's description was 3 before acu-therapy and it became 2 after the therapy. These results suggest that acupuncture and ear-acupuncture were effective as the first intention in healing hemifacial spasm.

• Tuberculosis and Respiratory Diseases
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• v.74 no.2
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• pp.70-73
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• 2013

Dyskeratosis congenita is a rare congenital disorder characterized by a triad of reticular pigmentation of the skin, dystrophic nails, and leukoplakia of the mucous membrane. Sometimes it is associated with bone marrow failure, secondary malignancy and interstitial lung disease. Though it is rare, Dyskeratosis congenita is diagnosed relatively easily when clinicians suspect it. It can be diagnosed just by gross inspection with care. Dyskeratosis congenita should be considered as one cause associated with interstitial lung disease. In Korea, interstitial lung disease with dyskeratosis congenita has not been reported. We report a case and review the literature.

• The Journal of Internal Korean Medicine
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• v.21 no.3
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• pp.505-510
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• 2000

In the treatment of trigeminal neuralgia, it is known that the operative mothods, such as neurovascular decompression, rhizotomy etc. are the most effectious therapies on its pain control. But, due to some side effects and complication, the healing by the first intention of trigeminal neuralgia has been the pharmacotherapy. The cabamazepine is the most common agent, but it is not often effectious in some cases, and attenuated as time goes, engaged in some symptoms, such as dizziness, nausea, vomit, etc., and caused in aplastic anemia, thus it has much deficacies in being the first intention. Recently we have experienced a 77-year old woman who had suffered from the severe trigeminal neuralgia for 21 years, and her condition and pain control were improved through the Korean medical treatments, so we report it for the better treatment.