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BACKGROUND Extrathyroidal extension is an important factor to determine the extent of thyroid surgery. The aim of the present study was to evaluate the usefulness of high-resolution ultrasound (US) for predicting the extrathyroidal extension of papillary thyroid microcarcinoma (PTMC). METHODS This study included a total of 221 PTMCs in 181 patients. PTMC(More)
BACKGROUND There has been no report concerning the factors that contribute to the technical difficulty of endoscopic clearance of common bile duct (CBD) stones. OBJECTIVE Our purpose was to determine the factors that contribute to the technical difficulty of endoscopic clearance of CBD stones. DESIGN Prospective study. SETTING A tertiary referral(More)
BACKGROUND We investigated the clinicopathological and immunohistochemical characteristics, genetic aberrations and prognostic factors in 28 patients with extragastrointestinal stromal tumors (EGISTs) from six centers in South Korea. PATIENTS AND METHODS Immunohistochemistry was performed for c-KIT (CD117), PKC-θ (protein kinase C theta), DOG-1(More)
OBJECTIVE The purpose of this presentation is to illustrate the normal sonographic anatomy of the anterior neck region and the sonographic findings of various kinds of extrathyroid lesions. METHODS Cases of extrathyroid lesions were collected and reviewed retrospectively from our archives. All of the sonographic examinations were performed with(More)
The differential diagnosis of gallbladder (GB) cancer from inflammatory diseases in patients with a thickened GB wall is difficult, whereas the pre-operative diagnosis of GB cancer is critical for selecting the appropriate surgical modality. We evaluated the clinical usefulness of endoscopic ultrasonography (EUS) for the differential diagnosis of GB wall(More)
BACKGROUND Quantitative magnetic resonance imaging (MRI) of cartilage has recently been applied to patients with osteoarthritis (OA). T2 mapping is a sensitive method of detecting changes in the chemical composition and structure of cartilage. PURPOSE To establish baseline T2 values of glenohumeral joint cartilage at 3.0 T and compare T2 values among(More)
BACKGROUND Thyroid ultrasound (US) is used as the first diagnostic tool to assess the management of the disease. In spite of its importance, US is a very subjective method and highly dependent on the skill of the performer. There have been few reports evaluating thyroid US performance and even fewer reports of observer variability in US assessment.(More)
Ultrasound (US) elastography is a valuable imaging technique for tissue characterization. Two main types of elastography, strain and shear-wave, are commonly used to image breast tissue. The use of elastography is expected to increase, particularly with the increased use of US for breast screening. Recently, the US elastographic features of breast masses(More)
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 cancers. METHODS Pathological and biological data were reviewed for 558 breast cancer patients treated at Kangbuk Samsung Hospital,(More)
We evaluated ultrasonography (US) findings between benign and malignant phyllodes tumors and analyzed diagnostic performance of US-guided core needle biopsy (CNB) for phyllodes tumors. Surgically removed phyllodes tumors of 168 women were divided into two groups according to the benign and malignant (including borderline tumor) groups and 116 were benign(More)