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Preoperative prediction of lateral lymph node metastasis (LNM) is important to prevent recurrence; however, there are few published data in predicting factors of lateral LNM before surgery. The present study investigated the factors affecting LNM in patients with papillary thyroid microcarcinoma (PTMC). A retrospective cohort study was conducted with data(More)
OBJECTIVE The purpose of this study was to evaluate the diagnostic performance of conventional sonography combined with sonographic elastography for differentiation between benign and malignant breast lesions and to assess the diagnostic performance with two types of interpretation criteria for sonographic elastography. METHODS For this study, we included(More)
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)
Ultrasonographically (US) guided core needle biopsy is currently recognized as a reliable alternative to surgical biopsy for the histopathologic diagnosis of breast lesions. However, despite advances in biopsy devices and techniques, false-negative diagnoses are unavoidable and may delay the diagnosis and treatment of breast cancer. The most common reasons(More)
OBJECTIVE The purpose of this study was to compare the results with three sets of guidelines for fine-needle aspiration biopsy of thyroid nodules. MATERIALS AND METHODS A total of 1,398 nodules confirmed with fine-needle aspiration biopsy or surgery were included in the study. We compared the diagnostic value of three sets of guidelines for ultrasound(More)
OBJECTIVE This study was performed to compare the clinical and radiologic findings and pathologic staging between index cancer and contralateral synchronous breast cancers and to determine the roles of mammography and sonography in their detection. CONCLUSION Additional contralateral breast cancers in bilateral synchronous breast cancers are apt to be(More)
PURPOSE To retrospectively evaluate the diagnostic performance of power Doppler ultrasonography (US) in depicting vascularity and to determine whether the combination of vascularity and suspicious gray-scale US features is more useful in predicting thyroid malignancy than are gray-scale features alone. MATERIALS AND METHODS This was an institutional(More)
OBJECTIVE The purpose of this study was to compare the diagnostic accuracy of ultrasound imaging with that of CT in the preoperative evaluation of primary tumors and cervical lymph nodes in patients with papillary thyroid carcinoma and to determine whether CT has greater diagnostic value than ultrasound alone in the care of these patients. MATERIALS AND(More)
OBJECTIVE The objective of our study was to report the results of classification of sonographic findings according to BI-RADS and to calculate the positive predictive value (PPV) for each BI-RADS assessment category. SUBJECTS AND METHODS We prospectively classified 4,668 breast sonograms according to BI-RADS final assessment category. Suspicious(More)
OBJECTIVE The purpose of this article is to evaluate the interobserver variability of elastography on real-time ultrasound and how it influences the agreement of final assessment on ultrasound. SUBJECTS AND METHODS From April to May 2009, 65 breast lesions of 53 patients (mean age, 42.6 years; range, 18-72 years) who underwent ultrasound-guided core(More)