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최승봉(Seung Bong Choi),이인규(In Kyu Lee),원대연(Dae Youn Won),이윤석(Yoon Suk Lee),시윤(Yoon Si),이상철(Sang Chul Lee),강원경(Won Kyung Kang),박종경(Jong Kyung Park),안창혁(Chang Hyeok Ahn),김준기(Jun-Gi Kim),오승택(Seong Taek Oh) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.6
Purpose: Although many papers have reported poor prognosis of colorectal mucinous adenocarcinoma, the underlying cause for its unfavorable outcome is yet to be elucidated. In the peritoneal fluid studies, we observed that peritoneal recurrences and cytology positive cases were many times mucinous cancers. On the basis of these observations, mucinous and non-mucinous adenocarcinomas were compared and prognostic factors were studied. Methods: Five hundred and forty-six patients who underwent surgery for colorectal adenocarcinomas from January 2004 to December 2008 were included. Results: Among the 546 patients, mucinous adenocarcinomas were 30 (5.5%) and non-mucinous adenocarcinomas were 516 (94.5%). Mean age was 55.0 years, which was younger than 63.2 years in non-mucinous colon cancers. They tend to develop in the right colon. Mucinous adenocarcinomas were more advanced in depth of invasion and distant metastasis, but no significant difference in lymph node (LN) metastasis. Peritoneal CEA, CA19-9, and positive cytology were more apparent. Liver and peritoneal metastasis did not show significant increases. Five year survival rates were 82.9% and 91.7% and cancer free survival rates were 42.7% and 68.5% each, respectively, for mucinous and non-mucinous cancers. According to stage, only stage Ⅲ and Ⅳ patients showed differences in cancer free survival and overall survival (P=0.001, 0.040). Conclusion: Mucinous adenocarcinomas showed worse prognoses and significant differences in recurrences, but had similar prognoses in early cancers. Although no significant differences were in LN metastasis, dissimilarities were in infiltration depth. Infiltrations led to the increase in free cancer cells and peritoneal fluid tumor markers: ultimately cancer recurrences developed.
섬유총판 간세포암으로 오인된 부신 피질 호산성 과립세포종 1예
박인수(ln Soo Park),최승봉(Seung Bong Choi),조병훈(Byung Hoon Cho),남우석(Woo Suk Nam),원용성(Yong Sung Won) 한국간담췌외과학회 2009 한국간담췌외과학회지 Vol.13 No.3
Adrenocortical oncocytoma is a very rare disease which has been reported in 40 cases. A 27-year-old female patient was admitted for a suspicious hepatocellular mass on ultrasonogram. On CT scan, sono-guided needle biopsy and 18 F-FDG PET scan, all results were unsatisfactory. During laparotomy, the mass was originated from Rt. adrenal gland and liver was pushed sideward by the mass. On pathology report, and adrenocortical oncocytoma was diagnosed. Adrenocortical oncocytoma has pathological characteristics comprised of oncocytes with granular, eosinophilic cytoplasm, and sufficient mitochondria in their cytoplasm. There were no established criteria for differential diagonose between benign and malignant adrenocortial oncocytoma. There are no sufficient data for the long-therm outcome of adrenocortical oncocytoma in the medical literature. Thus we report a case of adrenocortical oncocytoma with review of the related literature.
김경훈 ( Kyung Hoon Kim ),이진수 ( Jin Soo Lee ),조형준 ( Hyeong Jun Cho ),최승봉 ( Seung Bong Choi ),정대영 ( Dae Young Cheung ),김진일 ( Jin Il Kim ),이인규 ( In Kyu Lee ) 대한소화기학회 2015 대한소화기학회지 Vol.65 No.4
Actinomycosis is a chronic suppurative granulomatous infectious disease caused by actinomyces species that is characterized by formation of characteristic clumps called as sulfur granules. Abdominal actinomycosis is a rare disease and is often difficult to diagnose before operation. Abdominal actinomycosis infiltrating into the abdominal wall and adhering to the colon is even rarer. Most abdominal actinomycosis develops after operation, trauma or inflammatory bowel disease, and is also considered as an opportunistic infection in immunocompromised patient with underlying malignancy, diabetes mellitus, human immunodefidiency virus infection, etc. Actinomycosis is diagnosed based on histologic demonstration of sulfur granules in surgically resected specimen or pus, and treatment consists of long-term penicillin based antibiotics therapy with or without surgical resection. Herein, we report an unusual case of abdominal wall actinomycosis which developed in a patient after acupuncture and presented as abdominal wall mass that was first mistaken for abdominal wall invasion of diverticulum perforation. (Korean J Gastroenterol 2015;65:236-240)
피톤치드 기상서비스 예측 모델링 적용을 위한 발생특성 및 기상인자 조사
김병욱(Byoung-Ug Kim),현근우(Geun-Woo Hyun),최종한(Jong-Han Choi),홍영균(Young-Kyun Hong),이건호(Geon-Ho Yi),허인량(In-Ryang Huh),최승봉(Seung-Bong Choi) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.6
Objectives: This study was performed to find phytoncide (monoterpene) emission characteristics and weather factors for application in prediction modeling for phytoncide weather services. Methods: From 2017 to 2019, one coniferous forest and one deciduous forest were selected to investigate the monthly emission characteristics and identify the correlation with weather factors. Research items were analyzed for 11 species known to be emitting the most monoterpenes. Results: Phytoncide (monoterpene) began to increase in April when trees were activated and continued to be released until November. The concentration range of monoterpene in deciduous forests was 0.0 to 427.4 ng/Sm3 and coniferous forests was 0.0 to 1,776.8 ng/Sm3. Phytoncide emission concentrations in deciduous forests were 20 to 90 percent of those in coniferous forests, and averaged 39 percent overall. The correlation between monoterpene and temperature was very close, with 0.835 for the broadleaf forest and 0.875 for the coniferous forest. Monoterpene and humidity were found to be 0.731 for the broadleaf forest and 0.681 for the coniferous forest, while wind speed showed a negative correlation of –0.482 and –0.424, respectively. Regression of temperature with phytoncide showed that the coefficient of determination (r2) was highly correlated with 0.75 for the broadleaf forest and 0.80 for the coniferous forest. Not only is phytoncide concentration affected by temperature, humidity, and wind speed, but also rainfall over the preceeding one to three days. Nearby rainfall on the day of sampling was found to have a direct effect on the physiological activities of the trees. Conclusions: Overall, if the values of monoterpene and temperature, humidity, and wind speed are used as basic factors, and rainfall from one to three days previous is replaced with complementary values, it is believed that the numerical analysis and modeling of daily and monthly phytoncide will be possible.