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일차성, 이차성 그리고 삼차성 부갑상선 기능 항진증 환자의 수술 후 임상결과: 서울대학교 병원에서의 14년 경험
최윤석 ( Yun Suk Choi ),이규언 ( Kyu Eun Lee ),박귀원 ( Kwi Won Park ),노동영 ( Dong Young Noh ),오은미 ( Eun Mee Oh ),최준영 ( June Young Choi ),윤여규 ( Yeo Kyu Youn ),오승근 ( Seung Keun Oh ),구도훈 ( Do Hoon Koo ) 대한임상종양학회 2011 Korean Journal of Clinical Oncology Vol.7 No.1
목적: 일차성, 이차성, 삼차성 부갑상선 기능 항진증은 각각 원인과 치료방법 그리고 임상 경과가 서로 다르지만 부갑상선 절제술이 표준치료로 알려져 있다. 본 연구에서는 각각의 부갑상선 항진증의 수술 전후의 임상적 변화를 알아보고 부갑상선 절제술의 의미를 재고 해보고자 하였다. 방법: 1996년부터 2009년까지 총 126명이 서울대학교 병원에서 부갑상선 절제술을 시행 받았으며 각각 일차성 96명, 이차성 24명, 삼차성 6명이었다. 환자들의 나이, 성별, 생화학적 검사, 수술방법, 병리학적 검사 결과를 전자 의무기록을 통해 후향적으로 분석하였다. 결과: 모든 세 군의 환자에서 혈청 칼슘, 부갑상선 호르몬, 이온화 칼슘이 수술 전보다 호전을 보였다. 이차성 환자군은 다른 두 군에 비해 수술 전, 후의 부갑상선 호르몬이 높았으며(p<0.001, p=0.036), 수술 후 지속적인 부갑상선 기능 항진증(30.4%) 및 일과성 저칼슘혈증(87.5%)도 다른 두 군에 비해 많이 발생하였다.(p< 0.001) 일과성 저칼슘혈증의 대부분(90.4%) 은 6개월 이내 회복 되었다. 이차성 환자에서 부갑상선 아전 및 전 절제술을 시행 받은 경우 수술 후 일과성 저칼슘혈증이 많이 나타났으나(71.4%), 제한적 절제술을 시행 받은 경우 지속적 부갑상선 기능항진증이 더 많이 나타났다.(50%) 결론: 부갑상선 절제술은 생화학 검사상의 호전을 위한 치료 방법으로 추천될 수 있으며, 이차성에서는 제한적 절제를 하는 경우 지속적 부갑상선 항진증의 빈도가 더 높으므로 부갑상선 아전 및 전 절제술을 시행해야 한다. Purpose: Primary hyperparathyroidism(PHPT), secondary hyperparathyroidism(SHPT) and tertiary hyperparathyroidism(THPT) are different in the cause, treatment and prognosis. However the parathyroidectomy has been an efficient treatment in all hyperparathyroidism groups. A single institution`s 14 year experience of surgical treatment was analyzed to investigate perioperative changes of clinical characteristics and reconsider the value of parathyroidectomy as the treatment option. Materials and Methods: From 1996 to 2009, 126 patients underwent parathyroidectomy at single institute and the number of patients with PHPT, SHPT and THPT were 96, 24 and 6 retrospectively. The electronic medical records of age, sex, biochemical analysis, operative method, and pathologic results were reviewed retrospectively. Results: Postoperative calcium (Ca), parathyroid hormone (PTH), ionized calcium (iCa) levels were improved definitely than preoperative Ca, PTH, iCa level in all three groups. Pre and postoperative PTH level in SHPT was higher than in PHPT and THPT(p<0.001, p=0.036) and postoperative persistent PTH increased status were more common in SHPT.(30.4%, p<0.001) Postoperative temporary hypocalcemia was more common in SHPT(87.5%, p<0.001), almost of them (90.4%) were recovered in 6 month. In SHPT group, temporary hypocalcemia were more common in subtotal or total parathyroidectomy group than in limited resection group (94.1%) but persistent iPTH increase were more common in limited resection group (50%). . Conclusion: Parathyroidectomy is highly recommended to improve biochemical laboratory findings in patients with hyperparathyroidism. And in SHPT, subtotal or total parathyroidectomy is more appropriate surgical method for reducing the high incidence of persistent hyperparathyroidism.
김미숙(Mi Suk Kim),최윤석(Youn Seok Choi),최진석(Jin Seok Choi),정경재(Kyung Jae Jeong),윤길숙(Ghil Suk Yoon),이태성(Tae Sung Lee) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.3
Malignant mixed mullerian tumors (MMMTs) are unusual neoplasms occurring mostly in the endometrium. In the ovary, they are very rare and represent less than 1% of all ovarian malignancies. They are highly aggressive neoplasms comprising histologically of both epithelial and mesenchymal components. The cell type cannot be determined on the basis of appearance at magnetic resonance (MR) imaging, computed tomography (CT), or ultrasonography (US) but we diagnosed this case as endometrioid adenocarcinoma by MR imaging. Although the pathologic evaluation revealed the ovarian MMMT, mesenchymal components was very minute in the background of endometrioid adenocarcinoma components. The patient received the screening tests of ovarian carcinoma including transvaginal ultrasonography only 3months ago and she got negative results. During the exploration, a 15-cm sized mass looked like it has rapidly grown and ruptured spontaneously preoperatively. Herein we report a case of ovarian MMMT, which was diagnosed preoperatively as endometrioid adenocarcinoma by MR imaging with review of literatures.
박신영 ( Shin Young Park ),최종윤 ( Jong Yoon Choi ),백미숙 ( Mi Suk Baek ),고석봉 ( Suk Bong Koh ),이태성 ( Tae Sung Lee ),최윤석 ( Youn Seok Choi ) 대한산부인과학회 2010 Obstetrics & Gynecology Science Vol.53 No.6
Disseminated peritoneal leiomyomatosis is rare condition characterized by multiple subperitoneal nodules of benign smooth muscle proliferations. It is associated with high level of estrogen such as pregnancy, oral contraceptives or estrogen producing ovarian tumor, and occasionally associated with operation history of myomectomy or hysterectomy. Clinical course of disseminated peritoneal leiomyomatosis is usually benign, but malignant changes also rarely have been reported. We experienced a case of disseminated peritoneal leiomyomatosis who has history of laparoscopic myomectomy 10 years ago. The patient was a 35-year-old woman, and her chief complaint was palpable masses in lower abdomen. She underwent laparoscopic surgery which revealed numerous solid masses on the surface of peritoneum, descending colon, rectosigmoid colon, uterus, round ligament, and broad ligament. We present it with a brief review of literature.
산전검사상 신경모세포종으로 진단되었던 복막뒤 악성 기형종의
이정미 ( Chong Mi Yi ),김미숙 ( Mi Suk Kim ),최윤석 ( Youn Seok Choi ),정경재 ( Kyung Jae Jung ),이영환 ( Young Hwan Lee ),김정식 ( Jung Sik Kim ) 대한산부인과학회 2005 Obstetrics & Gynecology Science Vol.48 No.3
Through a routine antenatal ultrasound examination of 37-year-old woman at 38 weeks` gestation, a 6cm-diameter mixed solid and cystic mass was found in the left suprarenal area of her fetus. The following antenatal magnetic resonance image showed a larger
후막리소그라피를 이용한 세라믹기반의 미세유체소자용 수동형 혼합기의 제조
최재경,윤영준,임종우,김효태,구은회,최윤석,이종흔,김종희,Choi, Jae-Kyung,Yoon, Young-Joon,Lim, Jong-Woo,Kim, Hyo-Tae,Koo, Eun-Hae,Choi, Youn-Suk,Lee, Jong-Heun,Kim, Jong-Hee 한국세라믹학회 2008 한국세라믹학회지 Vol.45 No.11
Microfluidic device can be applied in a wide range of chemical and biological technology. In this paper, ceramic-based T-type passive mixers for microfluidic applications were fabricated by LTCC process combined with thick film photolithography. The base ceramic material in thick film was amorphous cordierite $((Mg,Ca)_2Al_4Si_5O_{18})$ and photoimageable polymers were added to give a photosensitivity. Two types of passive mixer, which showed the channel width of 1.0 mm and $200{\mu}m$, respectively, were designed considering mixing efficiency in the channel and their microfluidic properties were discussed in detail.
Ti40Zr10Cu36Pd14 비정질기지 복합재의 미세조직과 기계적 특성에 미치는 냉각속도의 영향
박선용 ( Seon Yong Park ),임가람 ( Ka Ram Lim ),나영상 ( Young Sang Na ),김승언 ( Seong Eon Kim ),최윤석 ( Youn Suk Choi ) 대한금속ㆍ재료학회 2016 대한금속·재료학회지 Vol.54 No.11
In this paper, we demonstrate that the microstructure and mechanical properties in the Ti<sub>40</sub>Zr<sub>10</sub>Cu<sub>36</sub>Pd<sub>14</sub> alloy can be tailored by controlling the cooling rate during solidification. A lower cooling rate increases the volume fraction of crystalline phase such as B2 but decreases the free volume of the glassy matrix. The increase of the B2 volume fraction can dramatically enhance the toughness of the composites, since the B2 phase is relatively ductile compared to the glassy matrix and seems to have good interface stability with the matrix. From the experimental results, it was found that there is a transition point in the plasticity of the composites depending on the cooling rate. Here, we explain how the toughness of the composites varies in accordance with the cooling rate in the Ti<sub>40</sub>Zr<sub>10</sub>Cu<sub>36</sub>Pd<sub>14</sub> alloy system. (Received April 22, 2016; Accepted May 25, 2016)