http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이숭,김성호,이두영,선제형,박진석,박주섭,양대현,나호영,김기태 대한대장항문학회 2005 Annals of Coloproctolgy Vol.21 No.1
Purpose: Small (6 to 10 mm) and diminutive colon polyps (below 5 mm) are routinely removed at the time of colonoscopy for the prevention of colon cancer. Our aims in this study were to determine clinicopathologic features and frequency of significant synchronous neoplastic lesions of small colon polyps and diminutive colon polyps and to investigate development of colorectal carcinoma via surveillance colonoscopy. Methods: We evaluated medical reports of all patients undergoing total colonoscopic examination over a 12-month period. Three hundred thirty nine small colorectal polyps, removed during colonoscopy, have been analyzed. We investigated the result of surveillance colonoscopy, also. Using this database, all adenomas were categorized into two groups: Group I, ≤5 mm diameter (diminutive polyp), Group 2, 6 to 10 mm diameter (small polyp). Significant synchronous adenomas were defined as adenoma over 6 mm diameter, dysplasia or cancer. Results: The most common age group was the sixth decade. The male-to-female ratio was 2.1:1. Of the small colorectal polyps, 180 (53.1%) were adenomatous, 32 (10.0%) were hyperplastic, 119 (34.9%) were chronic nonspecific inflammation, 3 (0.9 %) were lymphoid hyperplasia, and 4 (1.1%) were cancerous. The most frequent sites of these lesions were rectum and sigmoid (60.2%). Recognizable endoscopic features of polyps were redness (35.8%) and nodule (26.3%). The prevalence of advanced proximal synchronous polyps was 20.7% among patients with distal small lesions. And we detected 2 cases (25%) had new small polyps in follow up colonoscopic examination. Conclusions: All polyps should be removed when encountered during colonoscopy due to the higher prevalence of adenoma among these lesions. Effort to find new polyps via surveillance colonoscopy is needed.
Influence of ZnO Seed Layers on Charge Transport in ZnO Nanorod-based Dye-Sensitized Solar Cells
노준홍,이숭해,이상욱,정현석 대한금속·재료학회 2008 ELECTRONIC MATERIALS LETTERS Vol.4 No.2
ZnO nanorod array films were deposited on seeded fluorine-doped tin oxide substrates with a chemical bath deposition method, and the dependence of the photovoltaic properties of the films on the annealing temperatures of seed layers was investigated. The energy conversion efficiency of ZnO nanorod-based DSSCs that contained seed layers annealed at 340°C was superior to that of DSSCs consisting of ZnO nanorods on seed layers annealed at 100°C. Electrochemical impedance spectroscopy revealed that the improved energy conversion efficiency is due to the enhancement in the electron transport within the seed layers.
단클론성 유무가 저등급 위점막연관림프조직형 림프종의 임상양상 및 제균요법 후 초기 조직학적 관해에 미치는 영향
김진호,홍원선,민영일,정훈용,명승재,강경훈,김기락,허주령,최승목,심용희,이숭한,양석군 대한소화기학회 2001 대한소화기학회지 Vol.37 No.4
Background/Aims: There has been little description about the clinical significance of B-cell monoclonality in primary low-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma. We investigated the effects of B-cell monoclonality on early response to Helicobacter pylori (H. pylori) eradication therapy in patients with H. pylori-positive low-grade gastric MALT lymphoma. Methods: Twenty-nine patients with H. pylori-positive low-grade gastric MALT lymphoma were consecutively enrolled. We performed diagnostic tests including esophagogastroduodenoscopy (EGD), endoscopic ultrasonography and CT scan for the patients. PCR with PAGE was used to analyse the patterns of immunoglobulin heavy chain gene rearrangement. All 29 patients received H. pylori-eradication therapy. They were then followed up at regular intervals by EGD with biopsy. Results: Fifty-five percent (16/29) showed a single band in PAGE after PCR, suggesting a monoclonal proliferation of B-cell lineage. Regardless of B-cell monoclonality, there was no difference in histologic regression rates after 3 months of eradication therapy. However, the MALT lymphomas with B-cell monoclonality showed more ulcerous lesions (p$lt;0.01) and deeper infiltration of tumor into gastric wall (p$lt;0.05) than those without B-cell monoclonality. Conclusions: These results suggest that PCR-based B-cell monoclonality may not affect early therapeutic response to H. pylori-eradication therapy in gastric MALT lymphoma in spite of the more aggressive histologic morphology.