1.Development and Prevention of Pneumoconiosis in Korea.
Journal of the Korean Medical Association 1997;40(5):609-615
No abstract available.
Korea*
;
Pneumoconiosis*
2.Changes and Trends in the Newly Established Clinics in Korea.
Byung Soon CHOI ; Ok Ryun MOON
Korean Journal of Preventive Medicine 1992;25(4):357-373
After medical insurance came into effect in Korea, health care system has undergone tremendous changes. Changing patterns of newly established clinics is one of them. To investigate changes and trends, a total of 10,184 clinics which were newly established from 1981 to 1990 were analysed. Data were obtained from the file of contracting medical facilities of the Federation of Medical Insurance Societies. The proportion of newly establishied clinics has increased gradually, so that they amount to 13% of the total medical facilities in Korea. Meanwhile, the number of newly established medium-size hospitals and general hospitals have decreased. The number of newly established clinics per 100, 000 populations has increased in the all areas, but the rate of increase has decreased in the cities except in 6 major cities in 1990. The rate of increase in newly established clinics surpasses that of population increase. This study has identified the trend of young physicians' early driving into their solo medical practice than before. This indicates chance of the medical specialty training nowadays toughen due to the limited openings in residency programs. However, the sex ratio of physicians at newly established clinics has not changed. The decreasing tendency to open medical practice without beds and the increasing size of clinics are found in this study(The size has been measured in terms of medical manpower, of beds, and of medical equipment in this study). Two thirds of general practitioners have opened their clinics without beds, although such trend has been less in the case of specialists. All three indicators show increasing size, especially in the case of rural clinics. However, among them, the number of medical equipments has increased most significantly from 8.9 items in 1981 to 12.9 in 1990.
Delivery of Health Care
;
General Practitioners
;
Hospitals, General
;
Humans
;
Insurance
;
Internship and Residency
;
Korea*
;
Sex Ratio
;
Specialization
3.Three cases of occupational asthma induced by urethane paint.
Byung Soon CHOI ; Hae Kwan CHEONG
Korean Journal of Occupational and Environmental Medicine 1992;4(2):212-220
No abstract available.
Asthma, Occupational*
;
Paint*
;
Urethane*
4.Results brooker-wills nail for the treatment of femoral shaft fractures according to fracture level and comminution.
Chang Uk CHOI ; Soo Kyoon RAH ; Byung Ill LEE ; Soon Yong CHOI ; Soon Kang HUH
The Journal of the Korean Orthopaedic Association 1993;28(5):1674-1683
No abstract available.
5.Reading Agreement of Pneumoconiosis on Simple Chest Films.
Byung Soon CHOI ; Jung Gi IM ; Ho Keun CHUNG
Korean Journal of Occupational and Environmental Medicine 1997;9(3):411-429
No abstract available.
Pneumoconiosis*
;
Thorax*
6.Bronchial Hyperresponsiveness in Workers Exposed to Isocyanates.
Kyeong Sook CHOI ; Kyoo Sang KIM ; Byung Soon CHOI ; Jung Keun CHOI ; Se Hui LEE ; Young Hahn MOON
Korean Journal of Preventive Medicine 1996;29(1):103-112
We studied the association of nonspecific bronchial hyperresponsiveness with general characteristics, exposure concentration, respiratory symptoms, chest x-ray findings, past histories and pulmonary function. We determined bronchial hyperresponsiveness by methacholine challenge test. And we conducted a respiratory symptom questionnaire and performed spirometry on 111 workers occupationally exposed to isocyanates in various industries. About 21.6% of subjects had bronchial hyperresponsiveness. No significant differences were observed between the hyperresponsive and non-responsive group with respect to age, sex, employment period, height, and smoking histories cough and breathlessness were significantly associated with the bronchial hyperresponsiveness. The hyperresponsive group had more experience of bronchitis and asthma in the past than the non-responsive group. The lower FEV1 and FEV1 % were closely related with bronchial hyperresponsiveness. Bronchial hyperrespoosiveness seems to be associated with some of respiratory symptoms, past histories and pulmonary function parameters in workers exposed to isocyanates.
Asthma
;
Bronchitis
;
Cough
;
Employment
;
Isocyanates*
;
Methacholine Chloride
;
Occupations
;
Surveys and Questionnaires
;
Smoke
;
Smoking
;
Spirometry
;
Thorax
7.Study on the blood estradiol level and follicle development in induced superovulation of insufficient menstrual cycles.
Seung Gwan CHOI ; Jae Myeoung KIM ; Chung Soon BAIK ; Gi Soon LEE ; Byung Hee SUH ; Jae Hyun LEE
Korean Journal of Obstetrics and Gynecology 1992;35(2):256-271
No abstract available.
Estradiol*
;
Female
;
Menstrual Cycle*
;
Superovulation*
8.Small Cell Osteosarcoma Similar to Ewing's Sarcoma in Histologic Findings and MIC2 Expression: A case report.
Yoon Mee KIM ; Suk Woo YANG ; Mee Yon CHO ; Soon Won HONG ; Byung Ho CHOI
Korean Journal of Pathology 1999;33(3):204-209
Small cell osteosarcoma is a rare form of osteosarcoma and the histological differential diagnosis from other small round cell tumors (SRCTs) is difficult. The immunohistochemical stain for MIC2 has been considered an useful diagnostic marker for Ewing's sarcoma and primitive neuroectodermal tumors but recently, other SRCTs such as malignant lymphoma and embryonal rhabdomyosarcoma also showed positive reaction. Therefore, the usefulness of MIC2 must still be proven. We experienced a case of small cell osteosarcoma of the mandible in a 25-year-old man. Histologically, the tumor consisted of small round cells that resembled those of Ewing's sarcoma. Immunohistochemically, the tumor cells expressed diffuse strong positive reaction for MIC2 gene products. However, the scanty foci of lacy osteoid material between the tumor cells seemed to be diagnostic of osteosarcoma. The histologic and immunohistochemical findings of this case suggest close relationship between small cell osteosarcoma and Ewing's sarcoma.
Adult
;
Diagnosis, Differential
;
Humans
;
Lymphoma
;
Mandible
;
Neuroectodermal Tumors, Primitive
;
Osteosarcoma*
;
Rhabdomyosarcoma, Embryonal
;
Sarcoma, Ewing*
9.Bile duct changes in rats reinfected with Clonorchis sinensis.
Dongil CHOI ; Sung Tae HONG ; Shunyu LI ; Byung Suk CHUNG ; Jae Hoon LIM ; Soon Hyung LEE
The Korean Journal of Parasitology 2004;42(1):7-17
This study describes an evaluation of the sonographic, cholangiographic, pathological, and immunological findings, and the protective effect shown by rats reinfected with Clonorchis sinensis. Eight experimental rat groups were, namely, a normal control, a primary infection control, a reinfection I (reinfection 7 week after treatment following 3-week infection), a reinfection II (reinfection 2 week after treatment following 8-week infection), a reinfection III (exploration of the intrahepatic bile ducts 1 week after reinfection 4 week after treatment following 4-week infection), a superinfection, a secondary infection control, and an infection following immunization group. Sonographic and cholangiographic findings showed moderate or marked dilatation of the bile duct confluence in the primary infection control, reinfection II, and secondary infection control groups. Juvenile worms survived in the intrahepatic bile ducts 1 week after reinfection following treatment in the reinfection III group. It was concluded that reinfecting juvenile worms found during the first week following reinfection failed to survive or grow further. Anatomical, pathophysiological, or immunological changes may induce protection from reinfection in rats.
Animals
;
Anthelmintics/administration & dosage/therapeutic use
;
Antibodies, Helminth/blood
;
Antigens, Helminth/administration & dosage/immunology
;
Bile Duct Diseases/parasitology/*pathology/ultrasonography
;
Bile Ducts, Intrahepatic/parasitology/*pathology/ultrasonography
;
Cholangiography
;
Clonorchiasis/parasitology/*pathology/ultrasonography
;
Clonorchis sinensis/*pathogenicity
;
Immunization
;
Praziquantel/administration & dosage/therapeutic use
;
Rats
;
Rats, Sprague-Dawley
;
Sound Spectrography
;
Support, Non-U.S. Gov't
10.Air in Vagina: Significance in the Staging of Uterine Cervical Carcinoma.
Byung Ihn CHOI ; Man Chung HAN ; Seung Hyup KIM ; Soon Beom KANG ; Hyo Pyo LEE
Journal of the Korean Radiological Society 1994;30(1):169-173
PURPOSE: To evaluate tlne significance of vaginal air seen on CT scan in preoperative staging of uterine cervical carcinoma. METHODS AND MATERIALS: A comparison was made between CT findings of vaginal air and true vaginal involvement status in 85 patients with uterine cervical carcinoma. CT findings were analyzed in terms of the presence or absence of vaginal air, number of CT slices in which vaginal air was seen, shape of vaginal air, and relation of vaginal airto cervical mass. RESULTS: Vaginal air was present in 35 patients and was absent in 50. Although the mere presence of vaginal air or multiplicity of CT slices showing vaginal air did not signify the presence of vaginal involvement, vaginal air with irregular margin or vaginal air adjacent to uterine cervical mass was suggestive of vaginal involvement. CONCELUSION: These observation of vaginal air in interpreting CT may be helpful in the preoperative staging of uterine cervical carcinoma.
Humans
;
Tomography, X-Ray Computed
;
Vagina*