Differential diagnosis in idiopathic granulomatous mastitis and tuberculous mastitis.

Purpose: Idiopathic granulomatous mastitis (IGM) is a rare chronic inflammatory disease of unknown etiology. The diagnosis of IGM requires that other granulomatous lesions in the breast be excluded. Tuberculous mastitis (TM) is also an uncommon disease that is often difficult to differentiate from IGM.

Sonographic surveillance for the detection of contralateral metachronous breast cancer in an Asian population.

Objective: This study was designed to assess the diagnostic indexes of sonographic surveillance with mammography for the detection of metachronous contralateral breast cancer.

Materials And Methods: Between January 2003 and December 2003, 1,706 breast sonographic examinations were performed by three radiologists in 1,256 Asian women with a history of surgery for breast cancer in one breast as an adjunct screening test to mammography in an academic medical center. We evaluated the biopsy recommendation rate, a diagnostic index, of the combination of whole-breast sonography and mammography for the detection of contralateral metachronous breast cancers and the positive predictive value (PPV) of this biopsy recommendation rate.

US-guided vacuum-assisted biopsy of microcalcifications in breast lesions and long-term follow-up results.

Objective: To evaluate the diagnostic accuracy of the use of an ultrasonography (US)-guided vacuum-assisted biopsy for microcalcifications of breast lesions and to evaluate the efficacy of the use of US-guided vacuum-assisted biopsy with long-term follow-up results.

Materials And Methods: US-guided vacuum-assisted biopsy cases of breast lesions that were performed between 2002 and 2006 for microcalcifications were retrospectively reviewed. A total of 62 breast lesions were identified where further pathological confirmation was obtained or where at least two years of mammography follow-up was obtained.

Treatment-planning CT scan for breast and chest-wall irradiation: how many unexpected abnormalities could we detect?

Objective: The objective of this study was to determine whether diagnostic interpretation of contrast-enhanced computed tomography (CT) images for radiation planning in breast irradiation detects a considerable number of unexpected abnormalities.

Materials And Methods: One hundred thirty-one patients underwent treatment-planning CT scans for breast or chest-wall irradiation. A diagnostic radiologist prospectively reviewed each scan and determined the incidence of previously unknown findings, the impacts of such findings on treatment, and the need for additional radiological studies based on the CT interpretation.

Characterization of microcalcification: can digital monitor zooming replace magnification mammography in full-field digital mammography?

The aim of this study was to compare the diagnostic accuracy and image quality of microcalcifications in zoomed digital contact mammography with digital magnification mammography. Three radiologists with different levels of experience in mammography reviewed 120 microcalcification clusters in 111 patients with a full-field digital mammography system relying on digital magnification mammogram (MAG) images and zoomed images from contact mammography (ZOOM) using commercially available zooming systems on monitors. Each radiologist estimated the probability of malignancy and rated the image quality and confidence rate.

Thyroid incidentalomas identified by 18F-FDG PET: sonographic correlation.

Objective: The purpose of this study was to evaluate the risk of malignancy of thyroid incidentalomas detected on (18)F-FDG PET and the diagnostic accuracy of sonography for differentiating benign from malignant focal thyroid incidentalomas that were detected on FDG PET.

Materials And Methods: Retrospective review was performed of a database of 87 focal thyroid lesions seen on FDG PET and sonography. Forty-two focal lesions were malignant.

Extrathyroid extension of well-differentiated papillary thyroid microcarcinoma on US.

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.

Power Doppler sonography: evaluation of solid breast lesions and correlation with lymph node metastasis.

Objective: The purpose of this study was to assess the role of power Doppler US in differentiating benign from malignant solid breast masses when used in conjunction with grayscale sonography (US) and the relationship with axillary lymph node metastasis.

Subjects And Methods: Grayscale US of 353 solid lesions was categorized using the US BI-RADS final assessment system prospectively. On power Doppler US, the presence of identified or penetrating vessels within the mass was evaluated, respectively.

The safety and efficiency of the ultrasound-guided large needle core biopsy of axilla lymph nodes.

Purpose: To evaluate the safety and efficiency of the Ultrasound (US)-guided large needle core biopsy of axilla lymph nodes.

Materials And Methods: From March 2004 to September 2005, 31 patients underwent the US-guided core biopsy for axilla lymph nodes. Twenty five lesions out of 31 were detected during breast US, and 6 of 31 cases were palpable.

Nonmalignant papillary lesions of the breast at US-guided directional vacuum-assisted removal: a preliminary report.

This study was conducted to assess the accuracy of US-guided directional vacuum-assisted removal (US-DVAR) in evaluating nonmalignant papillary breast lesions. This retrospective study was approved by the institutional review board at our institution; patient consent was not required. We reviewed the clinical and pathology findings from a total of 39 papillary lesions diagnosed at vacuum-assisted removal in 37 patients (age range, 26-60 years; mean age, 44.

Clinical application of the BI-RADS final assessment to breast sonography in conjunction with mammography.

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 sonographic findings were divided into major and minor suspicious findings.

The role of ultrasound in thyroid nodules with a cytology reading of "suspicious for papillary thyroid carcinoma".

Background: Irrespective of ultrasound (US) features, surgery is usually recommended for patients who have a fine-needle aspiration biopsy (FNAB) read as suspicious for papillary carcinoma (PTC). The aim of the present study was to evaluate the role of US in the management of thyroid nodules with a FNAB reading suspicious for PTC.

Methods: Between August 2002 and May 2006, 303 patients who had thyroid nodules with a FNAB reading suspicious for PTC underwent surgery.

Role of sonography in the detection of contralateral metachronous breast cancer in an Asian population.

Objective: This study was undertaken to retrospectively assess the contribution of sonographic surveillance in the early detection of metachronous contralateral breast cancer.

Materials And Methods: We retrospectively reviewed the pathologic, mammographic, and sonographic records of 51 patients with surgically proven metachronous bilateral breast cancer in 2,498 surgically proven breast cancers during 2000-2006. We first evaluated cancer staging according to the method of detection used to identify metachronous breast cancers.

Imaging findings of chest wall lesions on breast sonography.

Objective: The purpose of this presentation is to illustrate the sonographic findings of chest wall lesions that were depicted on breast sonography.

Methods: Chest wall lesions detected during breast sonography were collected and reviewed retrospectively.

Results: The sonographic findings of normal chest walls and various pathologic chest wall lesions, including inflammatory lesions, benign neoplasms, and malignant neoplasms, are discussed.

Bilateral synchronous breast cancer in an Asian population: mammographic and sonographic characteristics, detection methods, and staging.

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 small and less palpable and to have less suspicious imaging findings and less advanced cancer staging than the index cancer. Bilateral whole-breast sonography with mammography is useful in the early detection of contralateral synchronous breast cancer.

Sonographically guided 14-gauge core needle biopsy of breast masses: a review of 2,420 cases with long-term follow-up.

Objective: The objective of our study was to determine the diagnostic accuracy of sonographically guided core needle biopsy for breast masses by evaluating the outcomes of benign biopsies that had at least a 2-year follow-up.

Materials And Methods: In this retrospective study, we included a total of 2,420 lesions from 2,198 women who had undergone sonographically guided 14-gauge core needle biopsy. For evaluating the diagnostic accuracy of this procedure, the pathologic results were reviewed and correlated with rebiopsy or long-term imaging follow-up.

Primary thyroid lymphoma: role of ultrasound-guided needle biopsy.

Objective: The purpose of this study was to describe the sonographic findings of primary thyroid lymphoma and evaluate the role of ultrasound-guided biopsy in diagnosing thyroid lymphoma.

Methods: This study included 6 patients (age range, 56-72 years; mean, 62.5 years).

Findings of extrathyroid lesions encountered with thyroid sonography.

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 high-frequency (5- to 15-MHz) linear array transducers.

Septic arthritis versus transient synovitis of the hip: gadolinium-enhanced MRI finding of decreased perfusion at the femoral epiphysis.

Objective: The purpose of this study was to identify differences in the MRI findings of septic arthritis and transient synovitis in patients with nontraumatic acute hip pain and hip effusion.

Materials And Methods: The MRI findings in nine patients with septic arthritis and 11 with transient synovitis were reviewed retrospectively. This study was approved by our institutional review board.

Papillary thyroid carcinoma manifested solely as microcalcifications on sonography.

Objective: The purpose of this study is to assess the utility of sonographic detection and the role of sonography-guided fine-needle aspiration biopsy (FNAB) in thyroid carcinomas that appear only as microcalcifications without an associated mass.

Conclusion: This study covers 11 cases in which the only abnormal finding suggesting thyroid cancer was microcalcifications detected at sonography. All cases described were diagnosed as thyroid papillary carcinoma after surgery.

Breast cancer from the excisional scar of a benign mass.

Breast cancer developing from a surgical scar is rare; this type of malignancy has been reported in only 12 cases to date. Herein, we report on a 52-year-old female who developed infiltrating ductal carcinoma in a surgical scar following excision of a benign mass. Two years previously, the patient underwent surgery and radiotherapy for invasive ductal carcinoma of the contralateral breast.

Observer variability of Breast Imaging Reporting and Data System (BI-RADS) for breast ultrasound.

Purpose: To evaluate inter- and intra-observer variabilities in breast sonographic feature analysis and management, using the fourth edition of the Breast Imaging Reporting and Data System (BI-RADS).

Materials And Methods: We included 136 patients with 150 breast lesions who underwent breast ultrasound (US) and ultrasound-guided core needle biopsy. A pathological diagnosis was available for all 150 lesions: 77 (51%) malignant and 73 (49%) benign.

Imaging-histologic discordance at sonographically guided percutaneous biopsy of breast lesions.

Objective: To determine the frequency of imaging-histologic discordance at percutaneous breast biopsy and to evaluate differences in clinical and radiologic findings between pathologically upgraded lesions and non-upgraded lesions.

Materials And Methods: From February 2000 to June 2005, we reviewed 386 cases that had suspicious imaging findings but yielded benign histology at US-core needle biopsy and that underwent subsequent excisional biopsy. In 74 of 386 cases, the benign histology at core needle biopsy could not provide a satisfactory explanation for the radiologically suspicious lesions.