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CT Features of Vasculitides Based on the 2012 International Chapel Hill Consensus Conference Revised Classification

Hur JH, Chun EJ, Kwag HJ, Yoo JY, Kim HY, Kim JJ, Lee KW

Vasculitis, characterized by inflammation of vessel walls, is comprised of heterogeneous clinicopathological entities, and thus poses a diagnostic challenge. The most widely used approach for classifying vasculitides is based on...
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Unilateral Chest Wall Anomaly in a Patient with Gardner's Syndrome: Case Report

Song EH, Lee SY, Park HJ, Kwon HJ, Kim MS, Park HW, Kwag HJ, Kim HJ

Gardner syndrome is a familial disease consisting of colonic polyposis, osteomas, and soft tissue tumors. We describe unilateral chest wall anomaly in a 32-year-old man with Gardner syndrome. A chest...
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Various Techniques of Stent-Assisted Coil Embolization of Wide-Necked or Fusiform Middle Cerebral Artery Aneurysms : Initial and Mid-Term Results

Won YS, Rho MH, Kim BM, Park HJ, Kwag HJ, Chung EC

OBJECTIVE: To evaluate the feasibility and clinical and angiographic outcomes of stent-assisted embolization for complex middle cerebral artery (MCA) aneurysms. METHODS: The records of 23 consecutive patients with 24 MCA aneurysms,...
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Differentiation of Acute Total Occlusion of Coronary Artery from Chronic Total Occlusion in Coronary Computed Tomography Angiography

Kwag HJ

PURPOSE: To compare the features of coronary computed tomography angiography (CCTA) imaging of the patients with acute total occlusion (ATO) of coronary artery with those of chronic total occlusion (CTO). MATERIALS...
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Partially Cystic Thyroid Nodules: Ultrasound Findings of Malignancy

Park JM, Choi Y, Kwag HJ

OBJECTIVE: To seek for the ultrasound (US) findings of partially cystic thyroid nodules that are associated with malignancy. MATERIALS AND METHODS: We reviewed the US characteristics of 22 surgically confirmed partially...
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Ultrasound and Clinicopathological Characteristics of Triple Receptor-Negative Breast Cancers

Choi YJ, Seong MH, Choi SH, Kook SH, Kwag HJ, Park YL, Park CH

PURPOSE: Triple receptor-negative (TRN) breast cancer is associated with high risk of recurrence and poor prognosis. The present study assessed the clinicopathologic characteristics and ultrasound (US) features of TRN breast...
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Relationships between Endogenous Estrogen and the Risk Factors for Vascular Disease

Kim JY, Kwag HJ, Jeong HS, Song HJ, Shin J, Lee SH, Kim JS, Kim J

  • KMID: 2288741
  • Korean J Stroke.
  • 2011 Apr;13(1):20-26.
BACKGROUND: This study evaluated the relationships between endogenous estrogen levels and vascular risk factors in healthy men and women. METHODS: Demographics and laboratory data were collected from normotensive subjects (123 men...
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A Case of Metachronous Metastasis to the Breast from Non-Small Cell Lung Carcinoma

Yoon MY, Song CS, Seo MH, Kim MJ, Oh TY, Jang UH, Kwag HJ, Kim HS, Lim SY, Lim SY, Lee SS

  • KMID: 2270807
  • Cancer Res Treat.
  • 2010 Sep;42(3):172-175.
Breast metastases from an extramammary primary tumor are very rare and the prognosis for such patients is generally poor. We report here on a case of a 42-year-old female with...
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Imaging Findings of Malignant Fibrous Histiocytoma of the Breast: A Case Report

Kim JN, Kook SH, Kwag HJ, Choi YJ, Sohn JH, Park YL, Kim JH

A malignant fibrous histiocytoma (MFH) is the most common soft tissue sarcoma encountered during adulthood, but the breast is not a common site of involvement for MFH. Several investigators have...
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Imaging and Clinicopathologic Characteristics of Breast Cancers in Younger Group Compared to in Old Group

Choi YJ, Kook SH, Kwag HJ, Park YL

PURPOSE: We wanted to evaluate the difference of the images and the clinicopathological characteristics of young-age female breast cancer patients as compared to older Korean women with breast cancer. METHODS: A...
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Preoperative Diagnosis of Extraglandular Invasion of Thyroid Papillary Carcinoma: High Resolution Sonography versus Multidetector Computed Tomography

Choi YJ, Hong HP, Kwag HJ, Kook SH, Yun JS, Kim DH

  • KMID: 1472130
  • J Korean Soc Ultrasound Med.
  • 2009 Mar;28(1):21-26.
PURPOSE: To compare the diagnostic efficacy of high-resolution sonography (HRS) and multidetector computed tomography (MDCT) in determining the presence of extraglandular invasion of thyroid papillary cancer and to define ultrasound...
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Intracranial Hemodynamic Changes During Adult Moyamoya Disease Progression

Kwag HJ, Jeong DW, Lee SH, Kim DH, Kim J

Background and purpose: This study evaluated the changes in blood flow velocity in the anterior and posterior intracranial circulations according to the progression of moyamoya disease in adult patients. Methods:...
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Imaging Findings of Implanted Absorbable Mesh in Patients with Breast Partial Resection

Kwag HJ

  • KMID: 2396094
  • Yonsei Med J.
  • 2008 Feb;49(1):111-118.
PURPOSE: The author presents imaging findings of patients that underwent partial resection of the breast followed by absorbable mesh implantation. MATERIALS AND METHODS: Ultrasonographic (n=18) and mammographic (n=11) images of...
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Extracolonic Findings of CT Colonography: Frequency Analysis between Symptomatic and Asymptomatic Patients

Hong HP, Kwag HJ, Kim SK

PURPOSE: To perform a frequency analysis of the extracolonic findings (ECF) of the CT colonography between symptomatic and asymptomatic patients. MATERIALS AND METHODS: Seventy-two consecutive symptomatic patients and sixty-three consecutive asymptomatic...
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Comparison of Lesion Conspicuity of Radiofrequency Ablation Zones among MR Sequences According to Time in the Normal Rabbit Liver

Ku MS, Kim SK, Hong HP, Kwag HJ

PURPOSE: To compare the lesion conspicuity of radiofrequency ablation (RFA) zones among MR sequences according to time in the normal rabbit liver. MATERIALS AND METHODS: RFA zones were created in 12...
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The Role of the Use of US-guided Vacuum-Assisted Breast Biopsy for the Total Removal of Sonographic Evidence in Low- and High-Risk Benign and Malignant Breast Lesions

Kwag HJ, Kook SH

PURPOSE: To determine the role of the use of a US-guided vacuum-assisted biopsy for the removal of sonographic evidence (excisional mammotome) for low- and high-risk benign and malignant breast lesions. MATERIALS...
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Ultrasonographic Findings of an Implanted Absorbable Mesh in Patients with Breast Partial Resection: a Preliminary Study

Choi Y, Hong HP, Kwag HJ

  • KMID: 1512106
  • J Korean Soc Ultrasound Med.
  • 2007 Jun;26(2):89-94.
PURPOSE: To present the ultrasonographic findings of an implanted absorbable mesh in patients who underwent breast partial resection. MATERIALS AND METHODS: We retrospectively analyzed the ultrasonographic findings of 18 patients who...
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Successful Low Molecular Weight Heparin Treatment for the Global Alteration of Cortical Venous Drainage Developed after Intracranial Operation

Jeong HS, Choi SY, Kwag HJ, Kim J

  • KMID: 2343299
  • J Korean Neurol Assoc.
  • 2007 Nov;25(4):565-568.
Intracranial venous infarction and drainage alteration are rare clinical events developing after intracranial operation. Immediate anticoagulation has been recommended to restore the alteration of the intracranial venous drainage. However, for...
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Classification and Serial Evolution of PLEDs

Kim YS, Choi SY, Kwag HJ, Kim JM

BACKGROUND AND PURPOSE: Periodic lateralized epileptiform discharges (PLEDs) are defined as spikes or sharp waves occurring at an approximately regular interval. PLEDs are subdivided into PLEDs proper and PLEDs plus...
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US-guided Vacuum-assisted Breast Biopsy with Air Localization for Patients with Microcalcifications

Lee EK, Kook SH, Kwag HJ, Jung JP, Park YL, Bae WG, Chang ES

  • KMID: 2145081
  • J Korean Surg Soc.
  • 2006 Jul;71(1):12-17.
PURPOSE: Stereotactic vacuum-assisted breast biopsy (SV AB) has recently been introduced as an alternative to the traditional surgical excisional biopsy with needle localization (NLBB). Although SVAB has excellent sensitivity and...
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