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췌장의 비기능성 도세포종양의 임상적 특징 및 악성 예측인자
김현준 ( Kim Hyun Jun ),김명환 ( Kim Myung Hwan ),이성구 ( Lee Sung Koo ),이상수 ( Lee Sang Soo ),배종석 ( Bae Jong Seok ),장명국 ( Jang Myoung Kuk ),변정식 ( Byeon Jeong Sik ),민영일 ( Min Young Il ),황신 ( Hwang Shin ),박광민 ( 대한소화기학회 2003 대한소화기학회지 Vol.42 No.1
Background/Aims: It is difficult to determine preoperatively whether nonfunctioning islet cell tumors (NFICTs) are malignant or benign. The purposes of this study were to evaluate clinical characteristics and to differentiate benign from malignant behavior of NFICTs. Methods: We retrospectively analyzed 21 patients with NFICTs between 1990 and 2002. Results: Mean age was 51.4±13.2 years and female was predominant. Tumor size ranged from 0.5 to 13 cm (average 3.3±1.8 cm). Thirteen patients had variable symptoms. Histologically, 14 tumors were malignant and 7 were benign. In 9 out of 13 patients, pancreatogram showed narrowing of the main pancreatic duct, which was more frequently detected in patients with malignant NFICTs than in patients with benign ones (p<0.01). Surgical resection was performed in 20 patients. All patients with benign NFICTs are still alive after surgery, while 3 out of 14 patients with malignant NFICTs died 11, 22, 30 months after operation or diagnosis, respectively. The follow up time ranged from 1 to 111 months (mean 32.6 months) Conclusions: The presenting symptoms of patients with NFICTs were non-specific. The malignancy rate of NFICTs was high. Narrowing of the main pancreatic duct on pancreatogram suggested the malignancy. (Korean J Gastroenterol 2003;42:57-62)
황신일,민덕기,조상덕,김수일 연세대학교 산업기술연구소 1981 논문집 Vol.13 No.2
The friction resistance of a pile is the major contribution to the bearing capacity of friction piles. In this paper, an empirical equation for the friction capacity of steelpipe piles in sand is proposed through the laboratory pullout test. Pullout tests are carried out for the piles with length to diameter ratios of 4 to 10. The density levels of sand selected in the test are very loose, loose, medium and dense. The experimental analysis shows that the friction capacity is linearly increased with the internal friction angle of sand, and it also shows that the friction capacity is linearly increased with the length to diameter ratio of piles. Also, an important parameter to determine the friction capacity of a pile, the lateral coefficient of earth pressure, shows good correlations when compared with other pile equations.
간내 담도의 유두종으로부터 악성 변화한 유두상 선암 1예
김명환,이성구,서동완,박태일,민영일,황신,유교상,정석원,박지운,최은광,박덕우,민광선 대한소화기내시경학회 2000 Clinical Endoscopy Vol.20 No.4
Biliary papilloma usually consists of single or multiple papillary adenomas in the biliary tract and has a potential for recurrence and malignant transformation. We described herein a case of papillary adenoma of intrahepatic duct that transformed into papillary adenocarcinoma. A 49-year-old male patient was admitted to our hospital because of right upper quadrant pain. A CT scan revealed marked dilatation of S7 segmental duct and cholangioscopy and biopsy revealed mucin-secreting papillary adenoma in the right intrahepatic duct. Three years later, a follow up of CT scan showed aggravated S7 ductal dilatation and inner ill-defined mass. Cholangioscopy revealed multiple papillary mucosal projections with large amount of mucin in the right intrahepatic duct and biopsy revealed well differentiated papillary adenocarcinoma. The patient underwent right lobectomy, the papillary adenocarcinoma was extended in the dilated right intrahepatic duct and also showed hepatic parenchymal invasion.