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임치영(Chi Young Lim),남기현(Kee Hyun Nam),이잔디(Jan Dee Lee),장항석(Hang Seok Chang),정웅윤(Woong Youn Chung),차인호(In Ho Cha),이창걸(Chang Geol Lee),최은창(Eun Chan Choi),박정수(Cheong Soo Park) 대한두경부종양학회 2005 대한두경부 종양학회지 Vol.21 No.2
Purpose: Submandibular gland tumor is rare, less than 6% of head and neck tumor. The purpose of this article is to analysis the clinical experience and treatment outcomes of malignant submandibular gland tumor, suggesting a guideline of management. Methods: We retrospectively evaluated 26 patients who underwent operation for malignant submandibular gland tumor at Severence hospital between 1986 and 2004. Statistical analysis was performed by Kaplan-Meier method, log rank test, Chi-square test, Fisher's exact test using SPSS v12.0 for Windows. Results: They consisted of 18 males and 8 females whose median age was 47 years(range: 20-71). 10 cases of adenocystic carcinoma, 8 cases of carcinoma ex pleomorphic adenoma, 4 cases of mucoepidermoid carcinoma, 1 case each for acinic cell carcinoma, undifferentiated carcinoma, adeno carcinoma, epithelioid hemangioendothelioma. Sialoadenectomy only was performed in 10 cases(36.5%) and sialoadenectomy with neck node dissection was performed in 16 cases(63.5%). Adjuvant radiotherapy was done in 22 cases(84.6%). 10 year disease free survival rate for malignant submandibular gland tumor was 63.1 % and 10 year overall survival rate for malignant submandibular gland tumor was 70.1%. In univariate analysis, prognostic factors affecting recurrence of malignant submandibular gland tumor was initially papable lateral neck node in physical examination and metastasis of lateral neck node in pathologic confirmation. The prognostic factors affecting survival of malignant submandibular gland tumor was tumor size, TNM stage, recurrence and type of recurrence. Conclusion: In this study, prognostic factors affecting recurrence of malignant submandibular gland tumor was initially papable lateral neck node in physical examination and metastasis of lateral neck node in pathologic confirmation. The prognostic factors affecting survival of malignant submandibular gland tumor was tumor size, TNM stage, recurrence and type of recurrence. To prevent recurrence and to improve survival, early diagnosis and aggressive surgery must be considered.
좌측 광범위 경부 림프절 청소술 후 발생한 양측 유미흉 2예
신종현(Jong-Hyun Shin),이잔디(Jandee Lee),윤지섭(Ji-Sup Yun),임치영(Chi-Young Lim),남기현(Kee-Hyun Nam),정웅윤(Woong Youn Chung),박정수(Cheong Soo Park) 대한두경부종양학회 2006 대한두경부 종양학회지 Vol.22 No.2
Bilateral chylothorax as a complication of radical neck dissection is extremely rare. Early diagnosis of chy-lothorax is important due to the consequences on metabolic & cardiopulmonary conditions. This present report describes our recent experiences with two cases of bilateral chylothorax following left modified radical neck dissection that was treated successfully by conservative management.
수술 전 이하선 종괴의 위치파악에 이용하는 해부학적 경계표의 유용도
임치영(Chi Young Lim),김국진(Kook Jin Kim),임성주(Sung Ju Lim),이잔디(Jan dee Lee),남기현(Kee Hyun Nam),장항석(Hang Seok Chang),정웅윤(Woong Youn Chung),최홍식(Hong Shik Choi),박정수(Cheong Soo Park) 대한두경부종양학회 2006 대한두경부 종양학회지 Vol.22 No.1
Background: The location of parotid gland tumors can influence the duration and the difficulty of the operation. If the information about tumor location was available preoperatively, it would allow accurate operative planning and counseling of patients in terms of the length of the operation and the potential morbidity. Methods: This study was based on a retrospective review of 100 patients with parotid gland tumors underwent parotidectomy from January 2000 to October 2005 at Yong-Dong Severance Hospital. Based on computed tomographic(CT) scan findings, 4 landmarks such as facial nerve(FN) line, Utrecht(U) line, Conn's are(CA), and retromandibular vein (RV) were drawn on the scans in same plane. The location of tumors were determined by the landmarks and confirmed by the operative findings. The accuracy of each landmarks was evaluated. To find out the accuracies according to tumor size, the tumors were divided into 2 groups; less than 2 cm and larger than 2 cm in diameter. Results: U line was the most accurate(94%), sensitive(89.3%) and specific(97.7%) in predicting tumor location of the parotid gland. However, in small tumors less than 2cm, FN line (p=0.022) and RV criteria (p=0.028) were more reliable in accuracy. Conclusion: CA, FN line, U line, and RV are all useful landmarks in preoperative prediction for the location of parotid gland tumors. However, U line was the most accurate, but we must consider that proper landmark should be used in prediction according to the size of tumor because the accuracy of landmark may change.
임치영(Chi Young Lim),이잔디(Jan Dee Lee),남기현(Kee Hyun Nam),장항석(Hang Seok Jang),김혜령(Hae ryoung Kim),박정수(Cheong Soo Park) 대한두경부종양학회 2005 대한두경부 종양학회지 Vol.21 No.1
Myasthenia gravis with thymoma is associated with an increased risk of second malignancy, but concurrence of myasthenia gravis and thyroid carcinoma is rarely seen. In the treatment, it is emphasized to operate in two stage to avoid myasthenic crisis after surgery. In general, a thyroid cancer surgery is performed after controlling yasthenia gravis by means of thymectomy or medical treatment with steroids and anticholine esterase. We experienced two cases of thyroid carcinoma coexisting with myasthenia gravis, which is thought to be true first report in Korea.
임치영(Chi Young Lim),이잔디(Jan dee Lee),남기현(Kee Hyun Nam),권지은(Ji Eun Kwhan),장항석(Hang Seok Chang),정웅윤(Woong Yoon Chung),박정수(Cheong Soo Park) 대한두경부종양학회 2005 대한두경부 종양학회지 Vol.21 No.2
Skin metastasis from papillary thyroid carcinoma is extremely rare. Due to similar histopathologic features, it is difficult to differentiate skin metastatic papillary thyroid carcinoma and some primary skin neoplasms without a clinical history. However, most of metastatic skin lesions showed a strong reactivity to the antithyroglobulin antibodies unlike primary skin neoplasms. Metastatic skin lesions must be completely removed and radiotherapy can be added. Investigators reported that prognosis of skin metastases from thyroid carcinoma is dismal and the average survival after it's diagnosis was only 19 months because distant metastases were often discovered at diagnosis of skin metastasis or during follow-up period. We report a case of skin metastasis from tall cell variant of papillary thyroid carcinoma. In our case, the anti thyroglobulin antibodies measured from cystic fluid from a skin lesion was more than 2000 IU/ml. Skin metastasis was diagnosed at 20 months after primary surgery for thyroid cancer and brain metastasis at 12 months after diagnosis of skin metastasis. Although skin metastasis is an ominous prognostic indicator in patients with thyroid carcinoma, a radical treatment for skin lesions and early diagnosis of distant metastasis could provide a chance to the patients to improve their survival.
CFD를 통한 용융탄산염 연료전지 단위전지용 셀 프레임 구조 설계
이성주,임치영,이창환,LEE, SUNG-JOO,LIM, CHI-YOUNG,LEE, CHANG-WHAN 한국수소및신에너지학회 2018 한국수소 및 신에너지학회논문집 Vol.29 No.1
In this study, a $100cm^2$ cell frame for a molten carbonate fuel cell was designed using CFD analysis. Electrochemical reactions, gas flow, and the heat transfer in $100cm^2$ cell frame were modeled using COMSOL Multiphysics. Two design variables such as the height of the cell frame and the length of the gas input area were determined to obtain minimized temperature distribution and uniform gas distribution. With two design parameter such as height of the cell frame and the length of the gas flow channel, the temperature difference in the cell fame was decreased to $5^{\circ}C$ and the gas uniformity in the flow channel were achieved.