• 대한두경부종양학회지
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• 제2권1호
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• pp.23-31
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• 1986

During the past 14years 267 patients presented with a lump in the neck proven to be metastatic cancer histologically. In most cases the primary site was discovered by thorough physical examination, E.U.A.(examination under anesthesia) and radiodiagnostic studies. However in 31 cases complete diagnostic evaluation failed to reveal the primary site. This paper discusses the characteristics of this group of patients in terms of the frequency of the ultimately discovered primary sites, policies for diagnosis, methods of management, and the ultimate prognosis for such cases in Korea. The male: female ratio was 6.8:1 and 84 % of all cases occurred in the $51{\sim)70$ age group. The majority of these cancers were epidermoid carcinomas(67.7%) and 22 of the 31(71 %) were Stage IV lesinos(17 N3A lesions and 5 N3B lesions). Surgical management was employed in 7 cases only, and in 5 cases this was combined with rediotherapy, chemotherapy, or both. Nevertheless, the only patients who survived disease-free for two years or more (one for over 5 years) were two patients in this management group. None of the patients treated by radiotherapy or chemotherapy of a combination of these two modalities survived. Occult primary sites were eventually discovered in 5 of the 31 cases, two in the nasopharynx, and one each in the base of tongue, pyrifrom sinus, middle ear. Of the 21 cases with epidermoid carcinoma which presented in the neck, 2 are free of disease for 3years or more. Of those who underwent radical surgery two of five survived. This study thus confirms the principle enunciated by MacComb in 1972 that surgical treatment in the form of radical neck dissection is the cornerstone of management whenever feasible.

• 한국음향학회지
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• 제24권3호
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• pp.127-132
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• 2005

이식형 인공중이용 트랜스듀서는 주파수 특성 및 구동 성능이 우수해야 하고 크기가 작아야 한다. 이러한 트랜스듀서로서 단결정 압전 재료인 PMN-PT를 이용한 적층형 액츄에이터를 제안하였고, 유한요소해석 및 제작실험을 통해 그 타당성을 밝혔다. 실험에서는 두께 $0.2{\cal}mm$를 갖는 시편을 14층으로 쌓아 최종적으로 $1{\cal}mm{\times}1{\cal}mm{\times}2.8{\cal}mm$ 크기의 PMN-PT 적층형 액츄에이터를 제작하였다. 제작된 PMN-PT 액츄에이터의 성능은 Impedance Spectrum과 구동변위 측정을 통해 PZT 액츄에이터와 비교, 평가하였고, 이를 통해 단결정 재료인 PMN-PT를 이용할 경우 우수한 성능의 인공중이용 액츄에이터 제작이 가능함을 확인하였다.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1979년도 제13차 학술대회 연제순서 및 초록
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• pp.8.1-8
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• 1979

이비인후과영역의 microsurgery 는 중이수술을 위한 Otomicrosurgery에 이어 최근에는 후두 특히 성대의 수술에도 크게 이용되는 경향을 보이고 있다. 저자들은 1974년 8월부터 1579년 4월까지 4연5개월간 본에서 시행하였던 Suspension Lanpgoscope을 이용한 micro-surgery하에서 적출한 후두종괴 63례에 대해 임상통계적으로 분석하여 다음과 같은 결과를 얻었기에 문헌고찰과 함께 보고하는 바이다. 1) Suspension Laryngoscope은 총 63례로 남자 34측(54%), 여자 29례(46%)이었고 남여비는 1.2 : 1이였다. 2) 연령별로는 30대가 20례(31.7%)로 가장 많았으며 40대(15.9%), 20대(14.3%), 50대(12.7%)의 순이었다. 3) 수술부위는 성문부가 61례(96.8%) 성문상부가 2례(3.2%)이었다. 4) 성문부위별로는 양측이 24례(38.1%), 우측 22례(34.9), 좌측 15례(23.8%)의 순이었다. 5) 질병별로는 조직생검결과에 준하였으며 후두결절이 30례(47.6%)로 가장 많았으며, 편평상피암 10례(15.9%), 후두용종 8례(12.7%), 후두유두종 5례(7.95%)이고 기타의 비특리성염증이 5례(7.95%)순이였다.

• 대한구순구개열학회지
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• 제15권2호
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• pp.69-82
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• 2012

Our Team Approach consists of following five stages; (1) Peri-natal care until lip repair After ultrasound diagnosis, some obstetricians recommend the mother with CL/P fetus to undergo prenatal counseling in our CLP clinic. On the day the CL/P baby was born, our oral surgeon, nurse, and pedodontist visit the maternity clinic, and take counseling and take impression for a feeding plate. The cheiloplasty is performed in three months old. (2) From lip repair to palatal repair At one year of age, Otorhinolaryngologist checks middle-ear disease. Palatoplasty is carried out at 1.5 - 2 years old. (3) In deciduous and early mixed dentitions Speech is the most important issue in social life for the CL/P subjects, therefore the training of velopharyngeal function is essential. Orthodontist monitors dentofacial development from 5 years of age. In the case of severe maxillary under-growth or severe collapse, maxillary protractor or lateral expansion is indicative, respectively. In early mixed dentition, upper central incisor on the cleft area erupts with some torsion, and then the traumatic occlusion with tooth torsion must be corrected. (4) In mixed dentition Right before the eruption of upper canines, secondary bone grafting is performed. One year prior to the operation, maxillary fan-type expansion is carried out to correct the collapse of maxillary segments. Following the surgical operation, the erupted canine will be moved into the transplanted bone to avoid alveolar resorption. (5) In permanent dentition Final tooth alignment is carried out after eruption of second molars. Some cases may require orthognathic surgery after physical maturation. Prosthetic oral rehabilitation including the dental-implant is carried out after age eighteen.

• Advances in pediatric surgery
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• 제13권2호
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• pp.169-178
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• 2007

Teratomas arising from totipotential primitive germ cell are composed of 2 or 3 germ cell layers. We reviewed the records of 166 children who underwent the operation for teratoma from Jan, 1990 through April, 2007. There were 40 boys and 126 girls (average age $6.93{\pm}5.83$ years). Primary sites were ovary (n = 88), sacrococcygeum (n = 24), testis (n = 16), retroperitoneum (n = 16), mediastinum (n = 8), brain (n = 4), thymus (n = 3) and a single tumor involved the adrenal gland, neck, middle ear, oropharynx, stomach, pelvis, omentum, chest wall and scalp. Teratomas were mature in 141 patients, and immature in 25. Six patients who had ovarian immature teratomas grade 2 or 3 with peritoneal gliomatosis underwent adjuvant chemotherapy. During follow up period, 6 mature teratomas recurred at sacrococcygeal area (n = 1) and contralateral ovary (n = 5). Five patients of them underwent reoperation and diagnosed as a mature teratoma, but one who had underwent a left salpingooophrectomy with right ovary cystectomy at initial operation was observed carefully. Teratomas were dominant in female patients and developed at various organs. Complete excision was needed for good prognosis. In case of immature teratoma, complete excision and appropriate chemotherapy according to grading can contribute to favorable results.

• 대한청각학회지
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• 제24권4호
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• pp.204-209
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• 2020

Background and Objectives: Hearing loss (HL) and its repercussions are major problems in today's society. There are limited data on the relationship between degree of HL and otologic disorders. The aim of this study is to estimate mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures in hearing disability patients in South Korea. Subjects and Methods: Retrospective medical data for 160,205 patients with hearing disability was extracted. Mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures were compared with a normal control group consisting of 865,475 people; approximately 5 times the number of hearing disability patients. Results: According to the Korean National Disability Registry (NDR), 0.458% of the population in South Korea suffered from hearing disability in 2015. Higher rates of mortality and sudden idiopathic HL were reported in hearing disability patients, increasing up to a maximum of 1.594 times and 1,039.695 times, respectively, compared to the normal control group. Mastoidectomy surgery was 2.5 times more frequently performed and pressure equalizing (PE) tube insertion was about 15 times more frequently performed in hearing disability patients. Conclusions: Hearing disability is related to higher risks of mortality, sudden idiopathic HL and otologic surgical procedures, including mastoidectomy and PE tubing.

• Journal of Audiology & Otology
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• 제24권4호
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• pp.204-209
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• 2020

Background and Objectives: Hearing loss (HL) and its repercussions are major problems in today's society. There are limited data on the relationship between degree of HL and otologic disorders. The aim of this study is to estimate mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures in hearing disability patients in South Korea. Subjects and Methods: Retrospective medical data for 160,205 patients with hearing disability was extracted. Mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures were compared with a normal control group consisting of 865,475 people; approximately 5 times the number of hearing disability patients. Results: According to the Korean National Disability Registry (NDR), 0.458% of the population in South Korea suffered from hearing disability in 2015. Higher rates of mortality and sudden idiopathic HL were reported in hearing disability patients, increasing up to a maximum of 1.594 times and 1,039.695 times, respectively, compared to the normal control group. Mastoidectomy surgery was 2.5 times more frequently performed and pressure equalizing (PE) tube insertion was about 15 times more frequently performed in hearing disability patients. Conclusions: Hearing disability is related to higher risks of mortality, sudden idiopathic HL and otologic surgical procedures, including mastoidectomy and PE tubing.

• 대한한의학회지
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• 제42권4호
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• pp.102-119
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• 2021

Objectives: Facial diagnosis is an important part of clinical diagnosis in traditional East Asian Medicine. In this paper, using a fully automated facial shape analysis system, we show that facial morphological features are associated with cold pattern. Methods: The facial morphological features calculated from 68 facial landmarks included the angles, areas, and distances between the landmark points of each part of the face. Cold pattern severity was determined using a questionnaire and the cold pattern scores (CPS) were used for analysis. The association between facial features and CPS was calculated using Pearson's correlation coefficient and partial correlation coefficients. Results: The upper chin width and the lower chin width were negatively associated with CPS. The distance from the center point to the middle jaw and the distance from the center point to the lower jaw were negatively associated with CPS. The angle of the face outline near the ear and the angle of the chin line were positively associated with CPS. The area of the upper part of the face and the area of the face except the sensory organs were negatively associated with CPS. The number of facial morphological features that exhibited a statistically significant correlation with CPS was 37 (unadjusted). Conclusions: In this study of a Korean population, subjects with a high CPS had a more pointed chin, longer face, more angular jaw, higher eyes, and more upward corners of the mouth, and their facial sensory organs were relatively widespread.

• 한국초지조사료학회지
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• 제43권3호
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• pp.162-167
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• 2023

The experiment aim to breed an early-maturing variety of Italian ryegrass (Lolium multiflorum Lam.). It was conducted at the Grassland and Forage Crops Division, National Institute of Animal Science, RDA, Cheonan, Korea, from 2022 to 2023. The new variety named "Oasis" is a diploid with green leaves and has a semi-erect growth habit in late fall, and an erect growth habit in early spring. With a heading date of May 10, Oasis is categorized as an early-maturing variety. Compared with the "Florida80" as a control variety, Oasis's flag leaf was 1 mm wider and 2 cm shorter, while the plant length was 7.8 cm longer. Additionally, the ear of Oasis was 1.2 cm longer than that of Florida80, and it showed lodging resistance. The dry matter yield of Oasis (8,805 kg/ha) was higher than that of Florida80. The total digestible nutrient and crude protein contents of Oasis were 64.5%, and 9.3%, respectively, which were 1.1% and 0.6% higher than those of Florida80, respectively. The neutral and acid detergent fiber contents in Oasis were 54.2% and 30.8%, respectively, which was 1.9% and 1.4% lower than those of Florida80, respectively. These results indicate that Oasis has good dry matter yield in the most of region and especially, middle and northern region of South Korea.

• Journal of Nutrition and Health
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• 제53권2호
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• pp.155-174
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• 2020

본 연구는 제 6기 3년차 (2015년), 제 7기 1, 2년차 (2016년, 2017년) 국민건강영양조사 자료를 활용하여 50세 이후 연령층을 대상으로 사회경제적 수준, 음주, 흡연 및 신체활동 및 BMI 중 골다공증 발생에 영향을 미치는 변인을 통제변인으로 적용한 후 영양소 섭취 수준과 DDS가 골다공증 발생에 미치는 영향을 파악하고자 하였다. 골다공증으로 의사 진단을 받은 경험이 있는 경우 골다공증 환자군, 골다공증 의사 진단을 받은 경험이 없는 경우 정상군으로 분류하였으며, 정상군으로 분류된 대상자 중 환자군으로 분류한 대상자와 성, 연령 및 사회경제적 수준에 매칭되는 경우만을 자료 분석에 활용하였다. 본 연구결과 연령에 따라 골다공증 발생의 위험도는 75세 이상 연령군에 비해 50-64세 연령군에서 2.38배 정도 낮았으며, 모든 연령군에서 여자의 골다공증 발생의 위험이 8.85배 이상 높았다. 골다공증 발생에 영향을 미치는 통제변인으로 50-64세 연령군의 경우 성, 연령, 가구내 소득수준, 교육수준이었고, 65-74세 연령군의 경우 성, 교육수준, 음주, BMI이었으며, 75세 이상 연령군의 경우 성, 연령, 현재 흡연, 음주, BMI, 에너지 섭취량이었다. 모든 연령군에서 탄수화물, 단백질 (동물성, 식물성), 지방, 식이섬유, 칼슘, 인, 나트륨, 칼륨, 비타민 B₁, 비타민 B₂, 니아신, 콜레스테롤 섭취량 증가는 골다공증 발생의 위험을 낮추었으나 연령군별 통제변인을 적용할 경우 완전통제 되어 영양소 섭취량은 골다공증 발생에 영향을 미치지 않았다. 단백질, 인, 철, 비타민 B₁을 EAR 이상 섭취 시 모든 연령군에서 골다공증 발생의 위험을 19% 이상, 비타민 B₂와 칼슘을 EAR 이상 섭취 시 65세 이상 연령군에서 골다공증 발생의 위험을 31% 이상 예방하는 효과가 있었으나 통제변인 적용 시 65-74세 연령군에서 비타민 B₂만이 부분통제 되었고, 이외 영양소는 모든 연령군에서 완전통제 되었다. DDS 수준은 50-64세, 75세 이상 연령군에서 2점 이하의 점수를 보일 경우 5점을 보인 대상자에 비해 골다공증 발생의 위험이 각각 1.765배, 3.595배 높았으나, 각 연령군별 통제변인 적용 후 50-64세 연령군에서는 완전 통제되었고, 75세 이상 연령군에서는 부분통제 되었다. 본 연구결과 50세 이상 연령군에서 통제변인 적용 시 영양소 섭취량은 골다공증 발생의 위험에 완전통제되었으나, 75세 이상의 노인 연령군에서 DDS는 통제변인에 의해 부분통제되는 것으로 나타나 노인 연령층에서 DDS가 2점 이하의 낮은 점수를 보일 경우 골다공증 발생의 위험을 증가시겼다. 즉, 노인기 골다공증 예방 및 뼈 건강을 위한 식이치짐으로 곡류군, 육류·어류·콩류군, 채소군, 과일군, 우유 및 유제품군을 포함한 다양한 식품의 균형된 섭취를 권장할 필요가 있으며, 본 연구에서 선정된 통제변인은 추후 50세 이상 연령군을 대상으로 골다공증 관련 연구 수행 시 보정변인으로 활용될 수 있을 것으로 사료된다.