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<SUP>18</SUP>F-FDG PET-CT에서 진단된 갑상선 우연종의 악성종양 발견율 및 특징
이강영,고건<SUP>1<.SUP>,김선국<SUP>1<.SUP>,고진철<SUP>1<.SUP>,김행수,최상용,박신희,박용휘<SUP>2<.SUP>,Kang Young Rhee,Gun Koh,<SUP>1<.SUP>,Sun Kuk Kim,<SUP>1<.SUP>,Jin Chul Koh,<SUP>1<.SUP>,Haeng Soo Kim,Sang Yong Choi,Shin 대한갑상선-내분비외과학회 2008 The Koreran journal of Endocrine Surgery Vol.8 No.1
<B>Purpose: </B>PET-CT is often used to differentiate benign or malignant thyroid incidentalomas. In this retrospective study, we evaluated whether the <SUP>18</SUP>F-FDG uptake pattern and PET-CT findings improved accuracy over the standardized uptake value (SUV). <B>Methods:</B> <SUP>18</SUP>F-FDG PET-CT was performed on 2,178 subjects from August, 2004, to October, 2007, in Sung-ae Hospital. PET-CT was performed on 806 patients (37%) with suspected or known nonthyroidal cancer and 1,372 healthy subjects (63%) without a previous history of cancer. We investigated the clinical characteristics of patients, history, standardized uptake value (SUV), ultrasonography, and hormone levels in blood. Thyroidal cancer was confirmed by ultrasonography-guided fine needle aspiration and pathology after thyroid operation. <B>Results:</B> The prevalence of focal thyroid lesions on PET-CT was 8.8% (191/2178). Thyroid cancer confirmation was 7.9% (15/191). The maximum SUV of malignant thyroid lesions were significantly higher than that of benign lesions (7.00±3.08 vs. 4.49±1.84, P<0.001). <B>Conclusion:</B> PET-CT image interpretation that includes 18F-FDG uptake and SUV is better than PET-CT alone for differentiating benign and malignant lesions. Thyroid cancer risk increases as SUVmax levels increase. <B>(Ko</B><B></B><B>rean J Endocrine Surg 2008;8:38-42)</B>
Blood Mononuclear Cell Subsets in Patients with Chronic Obstructive Pulmonary Disease
Koh,Youn Suck,Cho,Young Joo,Kim,Won Dong,Kim,Woo Sung,Kim,Mee Kyung 울산대학교 의과대학 1994 울산의대학술지 Vol.3 No.2
흡연은 형청 1gE치를 높이며 또한 1gE는 환기장애와 관련이 있다. 한편 흡연은 혈액 T세포 분획에 변화를 초래한다. 이러한 소견들은 흡연자에서 발생하는 기도 폐쇄의 발생기전에 T세포를 매개로 하는 면역학적 이상이 관여할지도 모른다는 것을 시사한다. 이러한 가설을 증명하기 위하여 18명의 정상인과 18명의 만성폐쇄성폐질환 환자에서 혈액 단핵구 분획과 혈청 면역글로블린을 측정하였다. 정상 대조군과 만성폐쇄성폐질환 환자 사이에 백혈구 수 및 감별계산 그리고 T 세포 분획에는 차이가 없었고 호중구만 환자군에서 높았다. 만성폐쇄성폐질환 환자를 폐확산능치가 낮은 10명과 정상인 8명의 두 군으로 나누어 분석하여 보니 폐확산능치가 정상인 환자들은 정상대조군과 확산능이 낮은 환자군보다 유의하게 높은 CD8??T세포와 낮은 CD4??/CD8??비를 보였다. FEV₁/FVC는 폐확산능 정상 환자군에서만 CD4??/CD8??비와 유의한 상관관계를 보였다. 혈청 1gG, 1gM 그리고 1gE치는 세군에서 유사하였고, 1gA치만 확산능 정상 환자군에서 높았다. 이러한 소견들은 확산능 정상 만성폐쇄성폐질환 환자의 기도폐쇄 발생기전에 T세포 매개성 면역조절 이상이 관여할 것을 시사하며 기도폐쇄는 1gE 생산과 무관한 것으로 사료되었다.
A Choroidal Schwannoma Confirmed by Surgical Excision
Young Jae Cho,Jung Bin Won,Suk Ho Byeon,Woo Ik Yang,Hyoung Jun Koh,Oh Woong Kwon,Sung Chul Lee 대한안과학회 2009 Korean Journal of Ophthalmology Vol.23 No.1
Schwannomas rarely present as intraocular tumors and are often misdiagnosed as malignant melanoma. We describe a choroidal schwannoma confirmed by sclerouvectomy. A 30-year-old woman presented with a large nonpigmented intraocular mass of the choroid in the right eye and underwent surgical excision by sclerouvectomy. Histologically, the tumor was composed of a mixture of cellular solid components (Antoni A) and loose myxoid components (Antoni B). The tumor was eventually diagnosed as a schwannoma. Currently available ancillary studies are still of little value in definitively differentiating schwannomas from other choroidal tumors. In the case of atypical findings for a malignant melanoma, a benign neoplasm should be included in the differential diagnosis. This patient avoided enucleation by first having the mass excised. We are unaware of previous reports in which a choroidal schwannoma was diagnosed by surgical excision.
Sung Hyuk Heo,이은혜,박현희,Bum Joon Kim,Hyo Chul Youn,Young Seo Kim,Hyun Young Kim,Seong-Ho Koh,장대일 대한뇌졸중학회 2018 Journal of stroke Vol.20 No.1
Background and Purpose Carotid plaques are a strong risk factor for ischemic stroke, and plaquerupture poses an even higher risk. Although many studies have investigated the pathogenicmechanisms of carotid plaque formation, few have studied the differences in molecular mechanisms underlying the rupture and non-rupture of carotid plaques. In addition, since early diagnosis and treatment of carotid plaque rupture are critical for the prevention of ischemic stroke, many studies have sought to identify the important target molecules involved in the rupture. However, a target molecule critical in symptomatic ruptured plaques is yet to be identified. Methods A total of 79 carotid plaques were consecutively collected, and microscopically divided into ruptured and non-ruptured groups. Quantitative polymerase chain reaction array, proteomics, and immunohistochemistry were performed to compare the differences in molecular mechanisms between ruptured and non-ruptured plaques. Enzyme-linked immunosorbent assay was used to measure the differences in ATP-binding cassette subfamily A member 1 (ABCA1) levels in the serum. Results The expression of several mRNAs and proteins, including ABCA1, was higher in ruptured plaques than non-ruptured plaques. In contrast, the expression of other proteins, including β-actin, was lower in ruptured plaques than non-ruptured plaques. The increased expression of ABCA1 was consistent across several experiments, ABCA1 was positive only in the serum of patients with symptomatic ruptured plaques. Conclusions This study introduces a plausible molecular mechanism underlying carotid plaquerupture, suggesting that ABCA1 plays a role in symptomatic rupture. Further study of ABCA1 is needed to confirm this hypothesis.
Koh, Won-Jung,Jeong, Byeong-Ho,Jeon, Kyeongman,Kim, Su-Young,Park, Kyoung Un,Park, Hye Yun,Huh, Hee Jae,Ki, Chang-Seok,Lee, Nam Yong,Lee, Seung-Heon,Kim, Chang Ki,Daley, Charles L.,Shin, Sung Jae,Kim, American College of Chest Physicians 2016 Chest Vol. No.
<P>CONCLUSIONS: Oral macrolide therapy after an initial 2-week course of combination antibiotics might be effective in most patients with M massiliense lung disease.</P>
Long-term outcomes of nail bed reconstruction
Sung Hoon Koh,Youngkee You,Yong Woo Kim,Jin Soo Kim,Dong Chul Lee,Si Young Roh,Kyung Jin Lee,Min Ki Hong 대한성형외과학회 2019 Archives of Plastic Surgery Vol.46 No.6
Background There are various reconstructive options for nail bed defects. However, it ischallenging not to leave a deformity. In this study, we investigated differences in outcomesdepending on the reconstruction method, attempted to determine which method was better,and analyzed other factors that may affect outcomes. Methods The long-term outcomes of nail bed reconstruction were reviewed retrospectively. We performed three types of reconstruction depending on the defect type: composite graftsof severed segments, nail bed grafts from the big toe, and two-stage surgery (flap coveragefirst, followed by a nail bed graft). Subsequent nail growth was evaluated during follow-up,and each outcome was graded based on Zook’s criteria. The reconstruction methods werestatistically analyzed. Other factors that could contribute to the outcomes, including age, thetiming of surgery, germinal matrix involvement, defect size, and the presence of bone injuries,were also compared. Results Twenty-one patients (22 digits) who underwent nail bed reconstruction were evaluated. The type of reconstruction method did not show a significant relationship with the outcomes. However, patients who sustained injuries in the germinal matrix and patients with adefect larger than half the size of the nail bed had significantly worse outcomes than thecomparison groups. Conclusions The results suggest that no operative method was superior to another in termsof the outcomes of nail bed reconstruction. Nevertheless, involvement of the germinal matrixand defect size affected the outcomes.