Diagnostic Usefulness of Diffusion-Weighted MRI for Axillary Lymph Node Evaluation in Patients with Breast Cancer.

This study aimed to determine whether apparent diffusion coefficient (ADC) and morphological features on diffusion-weighted MRI (DW-MRI) can discriminate metastatic axillary lymph nodes (ALNs) from benign in patients with breast cancer. Two radiologists measured ADC, long and short diameters, long-to-short diameter ratio, and cortical thickness and assessed eccentric cortical thickening, loss of fatty hilum, irregular margin, asymmetry in shape or number, and rim sign of ALNs on DW-MRI and categorized them into benign or suspicious ALNs. Pathologic reports were used as a reference standard.

Computer-Aided Diagnosis Parameters of Invasive Carcinoma of No Special Type on 3T MRI: Correlation with Pathologic Immunohistochemical Markers.

Purpose: To investigate the correlation between computer-aided diagnosis (CAD) parameters in 3-tesla (T) MRI and pathologic immunohistochemical (IHC) markers in invasive carcinoma of no special type (NST).

Materials And Methods: A total of 94 female who were diagnosed with NST carcinoma and underwent 3T MRI using CAD, from January 2018 to April 2019, were included. The relationship between angiovolume, curve peak, and early and late profiles of dynamic enhancement from CAD with pathologic IHC markers and molecular subtypes were retrospectively investigated using Dwass, Steel, Critchlow-Fligner multiple comparison analysis, and univariate binary logistic regression analysis.

Screening mammography-detected ductal carcinoma in situ: mammographic features based on breast cancer subtypes.

We evaluated the mammographic and histopathologic features of screening mammography-detected ductal carcinoma in situ (DCIS) based on the breast cancer subtypes determined by immunohistochemistry. A total of 94 patients with 94 screening mammography-detected DCIS were included in this study. Mammographically, human epidermal growth factor receptor 2 (HER2)-positive DCIS was more commonly associated with calcifications than estrogen receptor (ER)-positive and triple-negative DCIS (P=.

Breast cancer recurrence according to molecular subtype.

Background: To evaluate the location of tumor relapse and imaging modality for detection according to the breast cancer subtype: luminal A, luminal B, HER2 positive luminal B, nonluminal HER2 positive, and triple negative.

Materials And Methods: A total of 1244 patients with breast cancer with known estrogen receptor (ER), progesterone receptor (PR), Ki-67 and human epidermal growth factor receptor 2 (HER2), who underwent breast surgery from 2009 to 2012 were analyzed. Patients were classified into the following categories: luminal A (n=458), luminal B (n=241), HER2 positive luminal B (n=227), nonluminal HER2 positive (n=145) and triple negative (n=173).

Readout-segmented echo-planar imaging in diffusion-weighted mr imaging in breast cancer: comparison with single-shot echo-planar imaging in image quality.

Objective: The purpose of this study was to compare the image quality of standard single-shot echo-planar imaging (ss-EPI) and that of readout-segmented EPI (rs-EPI) in patients with breast cancer.

Materials And Methods: Seventy-one patients with 74 breast cancers underwent both ss-EPI and rs-EPI. For qualitative comparison of image quality, three readers independently assessed the two sets of diffusion-weighted (DW) images.

Who could benefit the most from using a computer-aided detection system in full-field digital mammography?

Background: The computer-aided detection (CAD) system on mammography has the potential to assist radiologists in breast cancer screening. The purpose of this study is to evaluate the diagnostic performance of the CAD system in full-field digital mammography for detecting breast cancer when used by dedicated breast radiologist (BR) and radiology resident (RR), and to reveal who could benefit the most from a CAD application.

Methods: We retrospectively chose 100 image sets from mammographies performed with CAD between June 2008 and June 2010.

Impact of radiotherapy on background parenchymal enhancement in breast magnetic resonance imaging.

Background: While many studies have shown that hormones can influence background parenchymal enhancement (BPE) in breast magnetic resonance imaging (MRI), only few have directly address the effect of radiotherapy. The purpose of this study was to evaluate the impact of radiotherapy on BPE in breast MRI.

Materials And Methods: A retrospective search identified 62 women with unilateral breast cancer who had a breast MRI both before and after radiotherapy following breast-conserving surgery.

Characterization of the enhancing lesions on dynamic contrast enhanced magnetic resonance imaging in patients with interstitial mammoplasty.

Purpose: The purpose of this study was to categorize the morphologic and kinetic features of enhancing lesions in breasts with interstitial mammoplasty using dynamic contrast-enhanced magnetic resonance imaging and to assess factors predictive of breast cancer.

Materials And Methods: We retrospectively reviewed the clinical and radiological data of 21 enhancing lesions in 19 patients with interstitial mammoplasty, who underwent breast magnetic resonance imaging and biopsy or an operation in our hospital from September 2008 to July 2012. These lesions were sorted by morphological and kinetic features and final assessment category according to the BI-RADS lexicon.

Band-like interposing fat along large vessels: ultrasonographic pseudolesions of the breast.

Objective: The aim of this study is to evaluate the clinical characteristics and ultrasonographic findings of band-like interposing fat as well as to identify additional approaches for its diagnosis.

Materials And Methods: This study included 26 confirmed cases of band-like interposing fat from June 2008 to June 2010. A retrospective analysis was performed to evaluate the clinical characteristics and ultrasonographic findings in these cases.

What we should know in mammography after reduction mammoplasty and mastopexy?

Background: Reduction mammoplasty and mastopexy (breast lift surgery) are becoming increasingly common procedures. Knowledge of characteristic mammographic findings and imaging findings of breast cancer are important to interpret mammography in this population.

Methods: Patients undergoing a mammography examination between March 2006 and March 2012 were consecutively included.

Prevalence and clinical characteristics of primary headaches among school children in South Korea: a nationwide survey.

Objectives: To determine the 1-year prevalence of headache and clinical characteristics of primary headaches among school children in South Korea.

Background: Many population-based studies have estimated the 1-year prevalence of headache, migraine, and tension-type headache (TTH). The results of those studies vary in terms of race and region.

Diffuse infiltrative lesion of the breast: clinical and radiologic features.

The purpose of this paper is to show the clinical and radiologic features of a variety of diffuse, infiltrative breast lesions, as well to review the relevant literature. Radiologists must be familiar with the various conditions that can diffusely involve the breast, including normal physiologic changes, benign disease and malignant neoplasm.

Correlation of the apparent diffusion coefficient value and dynamic magnetic resonance imaging findings with prognostic factors in invasive ductal carcinoma.

Purpose: To evaluate the correlation of the mean and minimal apparent diffusion coefficient values (ADC(mean) , ADC(minimal) ) and dynamic magnetic resonance imaging (MRI) findings with prognostic factors in invasive ductal carcinoma.

Materials And Methods: A total of 107 women with invasive ductal cancer underwent breast MRI. The ADC(mean) and ADC(minimal) of the cancers were computed.

Significance of nipple enhancement of Paget's disease in contrast enhanced breast MRI.

Purpose: To evaluate significance of nipple enhancement of Paget's disease in contrast enhanced (CE) breast MRI.

Methods: Ten patients of biopsy proven Paget's disease were included in this study. Preoperative mammogram and ultrasonogram (US) were obtained in all 10 patients, and 8 patients underwent CE breast MRI prior to surgery.

Helical heart on ECG gated 99mTc-tetrofosmin SPECT: counterclockwise rotation of lesion axis on wall thickening polar map as compared with that on perfusion polar map in patients with coronary artery disease.

Objective: The location of a myocardial lesion on a wall thickening polar map often does not coincide with the location of the lesion on a perfusion polar map, especially when the myocardial lesion is located at the mid cardiac region. The purpose of this study was to determine the frequency and extent of discrepancy in the location of the lesion between perfusion and wall thickening polar maps on gated single photon emission computed tomography (SPECT) using lesion axis angle (LAA).

Methods: One hundred and forty-seven consecutive patients (male : female = 80 : 67, age range: 41-96 years) who underwent myocardial gated (99m)Tc-tetrofosmin SPECT on the suspicion of myocardial ischemia or infarct between September 2003 and September 2008 and showed both reduced myocardial perfusion and wall thickening on gated SPECT at mid cardiac region were reviewed.

Diffusion-weighted imaging of breast cancer: correlation of the apparent diffusion coefficient value with prognostic factors.

Purpose: To evaluate the role of diffusion-weighted imaging (DWI) in the detection of breast cancers, and to correlate the apparent diffusion coefficient (ADC) value with prognostic factors.

Materials And Methods: Sixty-seven women with invasive cancer underwent breast MRI. Histological specimens were analyzed for tumor size and grade, and expression of estrogen receptors (ER), progesterone receptors, c-erbB-2, p53, Ki-67, and epidermal growth factor receptors.

Erdheim-Chester disease with lung involvement mimicking pulmonary lymphangitic carcinomatosis.

Erdheim-Chester disease (ECD) is a rare proliferative non-Langerhans cell histiocytosis of multiple organs with unknown etiology. Around 20% of ECD cases are reported to be associated with lung involvement and there are very few cases manifested solely by nonspecific respiratory symptoms. A 50-year-old woman presented with dry cough and dyspnea for 2 weeks.

Galactography acquired with digital mammography in patients with nipple discharge: a retrospective analysis.

Purpose: To evaluate the galactographic findings taken with digital mammography and to compare the findings between benign and malignant breast diseases.

Materials And Methods: Galactographic findings were retrospectively analyzed and compared with histopathological results for 42 patients who showed abnormal findings on galactography and had histologically proven diagnoses between January 2005 and March 2008. A galactography was acquired using full-field digital mammography (Hologic Lorad Selenia; Danbury, USA).

Observer agreement using the ACR Breast Imaging Reporting and Data System (BI-RADS)-ultrasound, First Edition (2003).

Objective: This study aims to evaluate the degree of inter- and intraobserver agreement when characterizing breast abnormalities using the Breast Imaging Reporting and Data System (BI-RADS)-ultrasound (US) lexicon, as defined by the American College of Radiology (ACR).

Materials And Methods: Two hundred ninety three female patients with 314 lesions underwent US-guided biopsies at one facility during a two-year period. Static sonographic images of each breast lesion were acquired and reviewed by four radiologists with expertise in breast imaging.

18F-fluorodeoxyglucose positron emission tomography in patients with recurrent ovarian cancer: in comparison with vascularity, Ki-67, p53, and histologic grade.

The aim of this study was to assess the correlation between 18F-fluorodeoxyglucose positron emission tomography (FDG PET) positivity of tumor recurrence and vascularity, Ki-67, p53, and histologic grade in patients with ovarian cancer. Nineteen patients with recurrent ovarian cancer underwent FDG PET before second-look surgery. Archival paraffin-embedded tissue materials were used to assess histologic grade including architectural pattern, mitotic activity, and nuclear pleomorphism; intratumor microvessel density (MVD); Ki-67; and p53.

Predictors of poor outcome after selective dorsal rhizotomy in treatment of spastic cerebral palsy.

Objectives: The purpose of the study was to determine if there are preoperative clinical characteristics that might be predictive of a poor outcome after selective dorsal rhizotomy (SDR) surgery in children with spastic cerebral palsy (CP).

Methods: A retrospective analysis was performed on 174 children who had undergone SDR from 1983 to 2001. Patients were divided into two groups according to their outcome at approximately 1 year after surgery: "acceptable" or "poor" outcome.

Spectrum of sonographic findings in superficial breast masses.

Objective: The purpose of this presentation is to show the sonographic findings of breast masses, which can occur in subcutaneous fat or in the cutaneous layer of the breast.

Methods: We reviewed the sonographic findings of superficial breast masses, including the epidermal inclusion cyst, steatocystoma multiplex, fat necrosis, accessory breast, Mondor disease, sparganosis, neurofibroma, tuberculosis, mastitis, and breast malignancy.

Results: Specific sonographic features of superficial breast masses have been illustrated.

Thoracic manifestations of breast cancer and its therapy.

Breast cancer is the second most common cause of cancer-related death in women. In most patients, imaging demonstrates thoracic changes resulting from either treatment, complications of treatment, or tumor recurrence or metastasis. The postsurgical imaging appearance of the chest wall depends on the surgical method used (radical mastectomy, modified radical mastectomy, breast-conserving surgery, breast reconstruction).

Pseudomyxoma peritonei: extraperitoneal spread to the pleural cavity and lung.

Abdominal and pelvic recurrence of pseudomyxoma peritonei after the surgery is occasionally seen but extraperitoneal spread and hematogeneous metastases are rare. This case of pseudomyxoma peritonei provides interesting radiologic findings of extraperitoneal spread, which occurred after an extremely long interval from initial diagnosis.

Pregnancy- and lactation-associated breast cancer: mammographic and sonographic findings.

Objective: To evaluate the mammographic and sonographic findings of pregnancy-associated breast cancer.

Methods: A total of 22 consecutive patients with breast cancer pathologically diagnosed during pregnancy (n = 10) or lactation (n = 12) were included in this study. The ages of the patients ranged from 26 to 49 years.