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고영초,유헌,김창현,황도윤,장진순,박효일,Koh, Young-Cho,Yoo, Heon,Kim, Chang-Hyun,Whang, Do-Yun,Jang, Jin-Soon,Park, Hyo-Il 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.7
Objective : The results of secondary transsphenoidal surgery(TSS) for either residual or recurring pituitary adenomas have been reported to be unfavorable. To evaluate the effectiveness of secondary TSS, we analyzed the surgical results of residual or recurred pituitary adenomas in patients who underwent secondary TSS from 1992 to 1998. Material and Methods : Among the 95 patients who underwent TSS during this period, 14(15%) received repeated TSS. Two of the 14 patients underwent three TSS. Among the 11 patients with pituitary adenomas, three had nonfunctioning tumors ; six prolachnomas ; two GH-secreting adenomas. The remaining three patieats had craniopharyngioma, pituitary abscess and hemangioendothelioma respectively. The interval between the two surgical procedures ranged from one week to 33 months(mean ; 12 months). Causes of the secondary TSS were tumor recurrence in 11 patients, intentional staged operation in three, persistent disease despite medical therapy and CSF leak after initial operation in one respectively. Treatments prior to secondary TSS were medical treatment only in eight patients. Results : During the repeated operationtss some adhesion was noted in septal mucous membrane. The sphenoid cavity was filled with fibrous tissue which correlated with the methods of reconstruction of the sellar floor at the previous operation. There was no statistically significant difference in success rate of surgery between the initial and the second TSS(86% vs 81%). The complication rate was similar between the two procedures. There was no statistically significant factors affecting the results of second TSS. Conclusion : Transsphenoidal reoperation was regarded as a suitable approach for treating recurrent pituitary adenomas in spite of some degree of operative difficulties. In patients with transsphenoidally resectable tumor residuals or recurrences confirmed by magnetic resonance imaging, remissions can be obtained with high probability, especially in secondary surgery after an staged decompression.
하후두부 접근법과 후경추체 접근법에 의한 거대 경정맥공 신경초종의 제거술과 동반된 합병증 - 증례보고 -
고성범,고영초,유헌,박시영,박효일,Koh, Sung-Bum,Koh, Young-Cho,Yoo, Heon,Park, Si-Young,Park, Hyo-IL 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.9
Schwannomas of the jugular foramen, originating from the glossopharyngeal nerve, vagus and accessory nerve represent approximately 0.17-0.72% of all intracranial tumor, and consists of 1.4-2.9% of all intracranial schwannomas. The clinical presentation of these tumors varies significantly according to originated nerve and it's growth pattern. Magnetic resonance(MR) image and temporal bone computed tomography(CT) scan have a major role for diagnosis of such tumor. The treatment of choice is total resection whenever possible. Generally, suboccipital approach is sufficient for the removal of the tumor, but in case with large size, combination of resection of petrous part of temporal bone with or without transection of sigmoid sinus is may be necessory. We have recently experienced one case of giant jugular foramen schwannoma and postoperative fatal complication in a 34-year-old male who was treated with combined posterior petrous and suboccipital approach with transection of sigmoid sinus
박병준,고영초,유헌,이채혁,박효일,Park, Byoung Jun,Koh, Young Cho,Yoo, Heon Yoo,Lee, Chea Heuck,Park, Hyo Il 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.3
Infantile myofibromatosis is a rare and benign myofibroblastic tumor that may occur in either solitary or multicentric form in the soft tissue of infants. A 13-month-old girl presented with a painless firm mass, measuring $2.5{\times}2.5cm$ in the right temporal area. Skull X-ray and CT scan revealed a well enhancing soft tissue tumor with a round skull defect and sclerotic margin. The tumor was totally excised with curettage of the skull defect followed by cranioplasty. Pathology was confirmed to be a solitary infantile myofibromatosis. We report this rare solitary infantile myofibromatosis of the temporal bone with review of the pertinent literature.
曺東震,韓俊澤,劉憲一,朴龍鎭,金錫胤,慶在浩 弘益大學校 1974 弘大論叢 Vol.6 No.-
The matrix of ductile cast iron are welded by pre-heating it at 300℃ in the room temperature. Through the mechanical, non-desbructive testing and analysis of the composition. the possibility if arc welding of ductile cast iron are studied as follows; 1. L electrode is the best among them in weldability, impact value and machinability. The next is LB electrode followed by S electrode. C electrode is last. However, the tensile strength showed in the following order: LB, S, L, C. 2. LB, S, L, C, all are available for the welding of cast iron. 3. The above experiment showed that L and LB are good in general. In addition LB is low in price, we therefore prospect that it will be widely used as the electrode for cast iron.
A Case of Spondylitis and Psoas Abscess due to Salmonella
Koh, Sung Bum,Yoo, Heon,Koh, Young Cho,Kwon, Oh Kee,Park, Hyo Il,Kang, Youn Kyung 인제대학교 백병원 2001 仁濟醫學 Vol.22 No.2
Salmonella에 의한 척수의 골수염은 정상적인 면역체계나 혈색소를 가진 환자에서는 그 빈도가 매우 드물게 보고 되고 있다. 저자들은 자발성의 심한 요통으로 내원한 정상 면역을 가진 환자에서 Salmonella에 의한 척추염과 요근 농양을 경험하여 임상적, 방사선학적, 그리고 병리학적인 문헌 고찰과 함께 보고하는 바이다.