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박승교 ( Seung Kyo Park ),임범진 ( Beom Jin Lim ),이철호 ( Cheol Ho Lee ),나현진 ( Hyun Jin Na ),윤수영 ( Soo Young Yoon ),문성진 ( Sung Jin Moon ) 대한내과학회 2013 대한내과학회지 Vol.85 No.4
Cisplatin is commonly used as chemotherapy for solid tumors. Its most important side effect is nephrotoxicity, which typically produces a gradual decline in renal function. Acute tubular necrosis is the usual pathological finding, while other findings are rare. A 75-year-old man presented to the emergency department (ED) with diarrhea and hypoglycemia. He was on 5-fluorouracil (5-FU)/cisplatin chemotherapy after a radical total gastrectomy for gastric cancer. Ten days earlier, he had been discharged after the third cycle of chemotherapy with normal renal function. When he arrived in the ED, he had azotemia (creatinine = 9.2 mg/dL) necessitating emergency hemodialysis. His renal function did not recover despite hydration and conservative treatment. Since he could not receive further chemotherapy due to the renal failure, he died 4 months later due to cancer progression. A renal biopsy performed 3 months after the renal failure showed acute tubular necrosis and severe interstitial fibrosis with normal glomeruli suggesting tubulointerstitial nephritis. (Korean J Med 2013;85:425-429)
박지수 ( Ji Soo Park ),김종원 ( Jong Won Kim ),임범진 ( Beom Jin Lim ),박승교 ( Seung Kyo Park ),고보건 ( Bo Gun Kho ),임재윤 ( Jae Yun Lim ),조재용 ( Jae Yong Cho ) 대한내과학회 2012 대한내과학회지 Vol.82 No.3
Gastric foregut duplication cyst is a rare congenital anomaly. There have been very few reports of bronchogenic cysts in the abdominal cavity attached to the stomach. We report a case of a 57-year-old Korean man with an adenocarcinoma arising within a bronchogenic cyst of the stomach. Pathologic findings revealed ciliated columnar epithelium lining the cyst and a solid papillary adenocarcinoma involving the subserosa of the stomach and the skeletal part of the diaphragm. Surgical resection is the treatment of choice for foregut cysts of the stomach, and the possibility of malignancy should be considered in patients with gastric duplication cysts. (Korean J Med 2012;82:374-377)
이상호(Sang-Ho Lee),김효찬(Hyo-Chan Kim),양동열(Dong-Yol Yang),박승교(Seung-Kyo Park),김찬국(Chan-Kuk Kim) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
A thick-layered RP process, transfer-type variable lamination manufacturing using expandable polystyrene foam (VLMST) has been developed to have the advantageous characteristics such as high building speed, low cost for introduction and maintenance of VLM-ST apparatus, and little staircase surface irregularities of parts. However, VLM-ST has difficulty fabricating an axisymmetric shape and a large-sized freeform shape because of the limited sloping angles and small build size. The objective of this paper is to develop a multi-functional hotwire cutting system using EPS-foam (MHC). MHC employs a four-axis synchronized hotwire cutter with the structure of two XY movable heads and a turntable. In order to examine the applicability of the developed MHC apparatus, an axisymmetric shape, a polyhedral shape and a large-sized freeform shape were fabricated on the apparatus.
양동열(Dong-Yol Yang),이상호(Sang-Ho Lee),안동규(Dong-Gyu Ahn),김효찬(Hyo-Chan Kim),박승교(Seung-Kyo Park) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
An effective thick-layered RP process, Transfer type Variable Lamination Manufacturing using expandable polystyrene foam (VLM-ST) has been developed to reduce building time, to decrease the stair-stepped effect of parts, to minimize post-processing with thick layers and sloping surfaces. VLM-ST employs a 4-axis synchronized automatic hotwire cutter with the parallelogram mechanism and expandable polystyrene foam sheet with the high packing density. In the VLM-ST process, a material in the form of a plate is cut into a Unit Shape Layer (USL) with thick layers and sloping surfaces by a 4-axis automatic synchronized hotwire cutter according to the cutting path data generated from a CAD model. Each USL is then bonded and built up to fabricate a 3D part. In order to examine the efficiency and applicability of the developed process, various three-dimensional shapes are fabricated on the VLM-ST apparatus.