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폴리프로필렌 이형단면사 제조에서 방사조건이 이형도에 미치는 영향
윤문구,허정림,서문호 건국대학교 1997 學術誌 Vol.41 No.2
The influence of spanning condition on the shape factor of polypropylene profiled yarn was studied experimentally. Test spinning of polypropylene was carried out by utilizing a Y-shaped capillary die which has been designed to produce profited yarn. The types, of spring machine used for this study were both conventional undrawn yarn spinning and one-step spin-draw machine. From the experimental results, there was little differences in the shape factor between undrawn and drawn yarns. The shape of the yarn was mainly determined in the spinning process. Also, the shape factor of the drawn yarn produced from the spin- draw machine was greater than that of by conventional spinning and drawing two- step process. Anisotropy of surface tension in cross section of extrudates was responsible for the resulting shape factor. As the output rate and the fineness of yarn Increased, its shape factor decreased.
Recurrence after endoscopic piecemeal mucosal resection for large sessile colorectal polyps.
Seo, Guh Jung,Sohn, Dae Kyung,Han, Kyung Su,Hong, Chang Won,Kim, Byung Chang,Park, Ji Won,Choi, Hyo Seong,Chang, Hee Jin,Oh, Jae Hwan WJG Press 2010 WORLD JOURNAL OF GASTROENTEROLOGY Vol.16 No.22
<P>To evaluate the safety and outcomes of endoscopic piecemeal mucosal resection (EPMR) for large sessile colorectal polyps.</P>
Anal Gland/Duct Cyst: A Case Report
Guh Jung Seo,Ju Heon Seo,Kyung Jin Cho,Hyung-Suk Cho 대한대장항문학회 2020 Annals of Coloproctolgy Vol.36 No.3
Anal gland/duct cyst (AGC) is rare and observed in only 0.05% of patients undergoing anal surgery. AGC is thought to be a retention cyst in the anal gland and arises when an obstruction of the anal duct causes fluid collection in the anal gland. We report a case of AGC in a 66-year-old woman without anal symptoms. Found by colonoscopy, the AGC was excised transanally. The histopathology of the specimen confirmed AGC. Colonoscopists should include AGC in the differential diagnosis of anal canal mass and rule out of malignancy. Excision is recommended for definitive diagnosis and treatment.
Seo, Guh Jung,Park, Ji Won,Yoo, Sang Bum,Kim, Sun Young,Choi, Hyo Seong,Chang, Hee Jin,Shin, Aesun,Jeong, Seung-Yong,Kim, Dae Yong,Oh, Jae Hwan Wiley Subscription Services, Inc., A Wiley Company 2010 Journal of surgical oncology Vol.102 No.1
<B>Background</B><P>The initial surgical management of asymptomatic patients with unresectable stage IV colorectal cancer (CRC) is still controversy. The aim of this study was to compare the incidence of major intestinal complications in asymptomatic patients who received palliative treatment for unresectable stage IV CRC, according to the type of treatment.</P><B>Methods</B><P>Between March 2001 and January 2008, we retrospectively analyzed 227 asymptomatic patients who underwent first-line resection of the primary tumor followed by chemotherapy (144 patients, resection group) or those who underwent first-line chemotherapy (83 patients, chemotherapy group).</P><B>Results</B><P>In the resection group, the incidences of intestinal obstruction, peritonitis, fistula, and intestinal hemorrhage were 14.6%, 0%, 0.7%, and 4.8%, respectively. In the chemotherapy group, these incidences were 15.2%, 1.2%, 0%, and 3.5%, respectively. There were no significant differences between the two groups in terms of intestinal complications. In multivariate analysis of overall survival, treatment type (resection group vs. chemotherapy group) was not a significant prognostic factor (P = 0.076).</P><B>Conclusions</B><P>In asymptomatic patients with unresectable stage IV CRC, first-line chemotherapy may be considered safe, with no increased risk of major intestinal complications compared with primary tumor resection plus chemotherapy. J. Surg. Oncol. J. Surg. Oncol. 2010;102:94–99. © 2010 Wiley-Liss, Inc.</P>
Guh Jung Seo,Hyung-Suk Cho 대한대장항문학회 2020 Annals of Coloproctolgy Vol.36 No.6
Small-bowel tumors, both benign and malignant, are rare lesions that clinicians often do not encounter, accounting for less than 2% of gastrointestinal malignancies. Usually, benign small-bowel tumors, including polyps, are asymptomatic. The diagnosis of small-bowel tumors is difficult because of an often-delayed presentation and nonspecific signs and symptoms. We report an incidentally detected case of a long, pedunculated, large polyp of the terminal ileum, which protruded through the ileocecal valve into the cecum that was removed by colonoscopy in a 41-year-old male with intermittent right-sided lower-abdominal pain. The polyp was resected through snare polypectomy without complications. The histopathology of the resected polyp was confirmed as an ileal hyperplastic polyp. Two years later, there was no recurrence observed via postpolypectomy surveillance colonoscopy.