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윤규종,김남규,이강영,민병소,허혁,강정현,이사라 대한대장항문학회 2011 Annals of Coloproctolgy Vol.27 No.3
Surgery is the standard treatment for a primary gastrointestinal stromal tumor (GIST); however, surgical resection is often not curative, particularly for large GISTs. In the past decade, with imatinib mesylate (IM), management strategies for GISTs have evolved significantly, and now IM is the standard care for patients with locally advanced, recurrent or metastatic GISTs. Adjuvant therapy with imatinib was recently approved for use, and preoperative imatinib is an emerging treatment option for patients who require cytoreductive therapy. IM neoadjuvant therapy for primary GISTs has been reported, but there is no consensus on the dose of the drug, the duration of treatment and the optimal time of surgery. These are critical because drug resistance or tumor progression can develop with a prolonged treatment. This report describes two cases of large rectal malignant GISTs, for which a abdominoperineal resection was initially anticipated. The two patients received IM preoperative treatment; we followed-up with CT or magnetic resonance imaging to access the response. After 9 months of treatment,a multi-disciplinary consensus that maximal benefit from imatinib had been achieved was reached. We determined the best time for surgical intervention and successfully performed sphincter-preserving surgery before resistance to imatinib or tumor progression occurred. We believe that a multidisciplinary team approach, considerating the optimal duration of therapy and the timing of surgery, is required to optimize treatment outcome.
윤규종(Kyu Jong Yoon),김수진(Soo Jin Kim),박철재(Chul Jae Park),박성길(Sung Gil Park),김주섭(Joo Seop Kim),오지은(Ji Eun Oh),남은숙(Eun Suk Nam),이삼열(Samuel Lee) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.76 No.1
Kaposi’s sarcoma occurs in higher rates in the setting of immunosuppression, especially in patients with acquired immunodeficiency syndrome (AIDS), immunosuppressive therapy or posttransplantation, commonly involving the skin, visceral, oral cavity or respiratory tract. Of the de novo malignancies in transplantation patients, the incidence of Kaposi’s sarcoma is increasing steadily. We report a case of a 37-year-old male patient who was diagnosed with Kaposi’s sarcoma 16 years after his first renal transplantation and 5 months after his second transplantation. He presented with lymphoproliferative lesions in the mediastinum and supraclavicular area without showing any typical cutaneous lesions. Diagnosis was confirmed by gun biopsy of the enlarged axillary lymph nodes. Tacrolimus, the initial immunosuppressive drug, was tapered while sirolimus therapy and chemotherapy with vincristine was initiated. The enlarged lymph nodes decreased in size and the patient has been treated with vincristin and conversion of tacrolimus to sirolimus.
김정호,양인영,윤규종 한국산업안전학회 1996 한국안전학회지 Vol.11 No.3
In this paper, collapse test of thin-walled structures, which are widely used in the vehicle members is carried out to observe the dependence of cross-sectional forms and materials on the absorbed energy in the viewpoint of crashworthiness. Also, specimens consist of two kinds (Al, CFRP) with various thickness. Comparisons of circular specimens are made to find characteristics of the different specimens on the absorption ability according to specimen thickness and materials.