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소포종양이 의심되는 갑상선 결절에서 초음파 검사 소견의 재검토가 진단적 갑상선 절제를 줄일 수 있는가?
최한림(Han-Lim Choi),김동주(Dong-Ju Kim),선우영(Woo-Young Sun),윤효영(Hyo-Young Yun),장이찬(Lee-Chan Jang),최재운(Jae-Woon Choi),이승영(Sung-Young Lee),이옥준(Ok-Jun Lee),박진우(Jin-Woo Park) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.2
Purpose: Follicular neoplasms (FNs) such as follicular adenoma and carcinoma (FTC), nodular hyperplasia (NH) and follicular variant of papillary carcinoma (FVPC) share cytological features. In the present study, we investigate whether review of sonographic findings in patients with thyroid nodules suspicious of FN spares diagnostic thyroidectomies (DTs) by excluding benign diseases such as NH or not. Methods: From June 1999 to May 2007, DTs were performed on 98 patients who had nodules suspicious of FN. High resolution sonographic findings are available for 53 patients. According to the final histologic diagnosis: Group Ⅰ (23 patients) consisted of 20 FNs (11 FTCs), 1 Hurthle cell adenoma, 2 FVPC; Group Ⅱ (30 patients) consisted of all others (23 NHs, 4 Hashimoto’s thyroiditis, 3 papillary carcinomas (PTCs). Sonographic features were compared between the two groups. Results: Three differential sonographic findings (DSF) i.e. irregular margin, absence of peripheral halo or marked inhomogeniety were identified more often in Group Ⅱ than Group Ⅰ (P<0.05). If we spared DTs for patients who have at least one DSF, 18 patients (34.0%) would have been selected for clinical follow-up whose final diagnoses were 14 NHs and 4 PTCs (including 1 FVPC). Sparing DTs by DSFs shows sensitivity, 56.7%; specificity, 95.7%; positive predictive value, 94.4%; negative predictive value, 62.9%; and accuracy, 73.6%, respectively. Conclusion: In patients with thyroid nodules suspicious of FN, sonographic findings such as irregular margin, absence of peripheral halo or marked inhomogeneity might spare DTs with the help of other diagnostic modalities such as cytogenetic or immunohistochemical studies.
최한림(Han-Lim Choi),김경환(Kyung-Whan Kim),최호선(Ho-Seon Choi),오세기(Saikee Oh),정백영(Baek-Young Chung) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
The transmission noise characteristics through the ventilating duct was conducted numerically using SYSNOISE. A ventilating system is usually composed of mufflers for preventing noise transmission from the ventilator into indoors through the ducts and distributors for transferring air to or from each room. The transmitted noise characteristics of distributors which have different branch angles and of mufflers having different shapes were analyzed numerically. New duct element combining a muffler and a T-shaped distributor was developed for better noise reduction in this paper. New element's performance was shown numerically.
최한림(Han-Lim Choi),양화연(Hwa-Yeun Yang),류동희(Dong-Hee Ryu),장이찬(Lee-Chan Jang),이상전(Sang-Jeon Lee),송영진(Young-Jin Song),선우영(Woo-Young Sun) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.6
The use of totally implantable central venous access devices (chemoport) has increased with the development of chemotherapeutic agents in oncologic patients, especially with no venous access site. However, there can be various complications such as port site infection, thromboembolism, injury of central vein, fracture of catheter, and migration of catheter. We report a rare case of migration of catheter to right atrium due to the separation of the catheter from the chemoport.