http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정주형,구본민,조혁기,한순용,여창기 대한이비인후과학회 2016 대한이비인후과학회지 두경부외과학 Vol.59 No.12
Background and Objectives To investigate the effectiveness of fine needle aspiration (FNA) conducted by the otolaryngologists, we compared the ultrasound (US)-guided FNA results conducted by a radiologist (RD-US), the US-guided FNA results (ENT-US), and the palpation guided FNA results (ENT-palpation) conducted by an otolaryngologist. Subjects and Method 1646 patients who underwent FNA were classified according to the site and periods of investigation (2007-2015), and their sampling adequacy was retrospectively reviewed. They were also divided into three groups (ENT-US, ENT-palpation, and RD-US); each group was then investigated for sampling adequacy. Results of further surgical excisional biopsy were compared with the those of the FNA results to investigate the diagnostic accuracy of all three groups. Results The sampling adequacy identified by the groups showed the result of ENT-US at 87.9%, ENT-palpation at 87.1% and RD-US at 91.3%. The periodical inadequacy rate failed to show any significant differences between the groups. The sensitivity of ENT-palpation was lower than other two groups. Diagnostic accuracy identified by the groups showed the result of ENT-US at 95.2%, ENT-palpation at 93.6%, and RD-US at 97.4%. Conclusion FNA performed by otolaryngologists demonstrates the effectiveness of diagnosis and treatment, and that doing so would improve economic efficiency. Therefore, it is recommended that well-trained otolaryngologists conduct FNA actively. Korean J Otorhinolaryngol-Head Neck Surg 2016;59(12):843-7
정주형,한유진 경성대학교 산업개발연구소 2010 산업혁신연구 Vol.26 No.3
세계 2위의 경제력과 세계 9위의 인구를 보유한 일본은 정보통신 기업들의 경영활동과 자금조달을 위한 교두보로서 매력적인 환경을 갖추고 있다. 하지만 그 동안 일본에 진출한 정보통신기업의 전략적 동기에 따른 성과 분석이 이루어지지 않았다. 이에 본 연구는, 외국인 비용을 극복하고 높은 성과를 내기 위해 어떠한 진출 전략을 활용하는 것이 효과적인지 그리고 현지 법인의 혁신과 마케팅 활동이 각각 성과에 어떠한 영향을 미치는지를 실증적으로 분석하여 관련 기업과 연구자들이 참고할만한 시사점을 도출하였다. 먼저 마케팅 지향, 네트워크 지향, 혁신 지향, 인적자원 지향, 금융혜택 지향의 총 다섯 가지의 변수를 선정하였으며, 선정된 변수에 따라 일본에 진출하여 활동 중인 34개의 정보통신 기업을 유형화한 결과 각각의 특성에 부합하는 5개의 그룹을 얻을 수 있었다. 그 결과, 각 유형 가운데 네트워크 지향형, 혁신 지향형 기업들이 순이익을 내는데 가장 효과적인 유형으로 나타났으며, 마케팅 활동이 특징적인 기업들의 경우에는 순이익 측면에 있어서 다른 유형에 비해 큰 성과를 얻고 있지 못하다는 것을 도출하였다. 본 연구는 탐색적 시도로서 의의를 가지며, 향후 표본의 크기 및 다양성에 대해서 보완을 하면, 일본 진출을 희망하는 외국계 정보통신 기업들이 기본적으로 참고할만한 자료로 활용할 수 있을 것이다.
정주형,박준완,김지룡,배기호,김태우,여창기 대한이비인후과학회 2019 대한이비인후과학회지 두경부외과학 Vol.62 No.2
Background and Objectives Cancer of the oral cavity is a disease of the head and neck that is difficult to treat. Periodic observation and biopsy are important for its early diagnosis once a premalignant lesion in the oral cavity is confirmed. The purpose of this study was to determine the importance of early excisional biopsy by investigating the histological features of oral leukoplakia and the rate of malignant change in the oral cavity. Subjects and Method A total of 327 patients who underwent punch biopsy of oral cavity from January 2011 to December 2017 were reviewed retrospectively for the presence of initial gross lesions and for their biopsy results. The histological findings of 6 initial gross lesion groups were compared. Additional excisional biopsies were performed in the seven oral cavity subsites. Results There were 33 cases of oral leukoplakia. The punch biopsies of 3 of these cases (9.1%) showed malignancy. Additional excisional biopsies were performed in 6 cases, 4 of which were malignant (66.7%). Additional excisional biopsies of the tongue were performed in 14 cases (9.0%), 5 of which (35.7%) were malignant. The rate of atypia in leukoplakia (9.1%) was higher than in other atypia groups. Additional excisional biopsies were performed in 3 cases (100%) of atypia of leukoplakia, all of which were assessed to be malignant. Conclusion For tongue leukoplakia, performing an early excisional biopsy rather than an incisional biopsy is recommendable. Moreover, additional excisional biopsies are needed when the initial biopsy is suggestive of hyperkeratosis, parakeratosis, or atypia.