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https://www.readbyqxmd.com/read/28915312/dce-and-dw-mri-as-early-imaging-biomarkers-of-treatment-response-in-a-preclinical-model-of-triple-negative-breast-cancer
#1
Stephanie L Barnes, Anna G Sorace, Jennifer G Whisenant, J Oliver McIntyre, Hakmook Kang, Thomas E Yankeelov
This work evaluates quantitative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and diffusion-weighted MRI (DW-MRI) parameters as early biomarkers of response in a preclinical model of triple negative breast cancer (TNBC). The standard Tofts' model of DCE-MRI returns estimates of the volume transfer constant (K(trans) ) and the extravascular extracellular volume fraction (ve ). DW-MRI returns estimates of the apparent diffusion coefficient (ADC). Mice (n = 38) were injected subcutaneously with MDA-MB-231...
September 15, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28914475/the-predicament-of-the-probably-benign-breast-mri-should-we-rely-on-intuition
#2
EDITORIAL
Amie Y Lee, Bonnie N Joe, Elissa R Price
No abstract text is available yet for this article.
September 2017: Breast Journal
https://www.readbyqxmd.com/read/28883997/evaluation-of-t1-t2-ratios-in-a-pilot-study-as-a-potential-biomarker-of-biopsy-proven-benign-and-malignant-breast-lesions-in-correlation-with-histopathological-disease-stage
#3
Marina A Malikova, Jaroslaw N Tkacz, Priscilla J Slanetz, Chao-Yu Guo, Adam Aakil, Hernan Jara
AIM: Early breast cancer detection is important for intervention and prognosis. Advances in treatment and outcome require diagnostic tools with highly positive predictive value. PURPOSE: To study the potential role of quantitative MRI (qMRI) using T1/T2 ratios to differentiate benign from malignant breast lesions. METHODS: A cross-sectional study of 69 women with 69 known or suspicious breast lesions were scanned with mixed-turbo spin echo pulse sequence...
August 2017: Future Science OA
https://www.readbyqxmd.com/read/28878739/precocious-puberty-or-premature-thelarche-analysis-of-a-large-patient-series-in-a-single-tertiary-center-with-special-emphasis-on-6-to-8-year-old-girls
#4
Tero Varimo, Heta Huttunen, Päivi Johanna Miettinen, Laura Kariola, Johanna Hietamäki, Annika Tarkkanen, Matti Hero, Taneli Raivio
INTRODUCTION: We describe the etiology, MRI findings, and growth patterns in girls who had presented with signs of precocious puberty (PP), i.e., premature breast development or early menarche. Special attention was paid to the diagnostic findings in 6- to 8-year-olds. MATERIALS AND METHODS: We reviewed the medical records of 149 girls (aged 0.7-10.3 years) who had been evaluated for PP in the Helsinki University Hospital between 2001 and 2014. RESULTS: In 6- to 8-year-old girls, PP was most frequently caused by idiopathic gonadotropin-releasing hormone (GnRH)-dependent PP (60%) and premature thelarche (PT; 39%)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28870431/could-parenchymal-enhancement-on-contrast-enhanced-spectral-mammography-cesm-represent-a-new-breast-cancer-risk-factor-correlation-with-known-radiology-risk-factors
#5
S L Savaridas, D B Taylor, D Gunawardana, M Phillips
AIM: To compare background parenchymal enhancement (BPE) on contrast-enhanced (CE) spectral mammography (CESM) with CE magnetic resonance imaging (MRI), and evaluate how these relate to hormonal status, mammographic breast density (MBD) and MRI fibroglandular tissue volume (FGTV). METHODS AND MATERIALS: Between June 2012 to October 2015, participants in a cancer staging study underwent full-field digital mammography (FFDM), CEMRI, and CESM. Two readers independently rated FGTV, MBD, and BPE using the Breast Imaging-Reporting and Data System (BI-RADS) criteria...
September 1, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28845605/use-of-the-probably-benign-bi-rads-category-3-assessment-for-masses-on-breast-mri-is-it-transferable-to-general-clinical-practice
#6
Elissa R Price, Edward A Sickles, Silaja Yitta, Natasha Brasic, Melinda J Yeh, Isabel E Allen, Bonnie N Joe
The purpose of this study was to identify potential BI-RADS 3 mass descriptors on breast magnetic resonance imaging by systematically defining positive predictive values (PPV). In a blinded retrospective review of BI-RADS 4 masses, reader 1 identified 132 masses and reader 2 identified 76 masses. PPV for mass descriptors and for descriptor combinations was determined. No mass descriptor resulted in a PPV ≤2% (BI-RADS 3 threshold). Descriptors with the lowest PPVs were circumscribed margin (8%), rim internal enhancement and persistent kinetics (13% each), and oval shape (15%)...
August 27, 2017: Breast Journal
https://www.readbyqxmd.com/read/28834447/revisiting-nonmass-enhancement-in-breast-mri-analysis-of-outcomes-and-follow-up-using-the-updated-bi-rads-atlas
#7
Sona A Chikarmane, Aya Y Michaels, Catherine S Giess
OBJECTIVE: The purpose of this study is to assess the frequency of reclassification of nonmass enhancement (NME) as background parenchymal enhancement (BPE) and to determine positive predictive values (PPVs) of NME descriptors using the revised BI-RADS atlas. MATERIALS AND METHODS: A retrospective review of our institution's MRI database from January 1, 2009, through March 30, 2012, identified 6220 contrast-enhanced breast MRI examinations. All findings prospectively assessed as NME and rated as BI-RADS categories 3, 4, and 5 (n = 386) were rereviewed in consensus by two radiologists who were blinded to pathologic findings with the fifth edition of the BI-RADS lexicon...
August 23, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28830202/radiological-distribution-of-brain-metastases-and-it-s-implication-for-the-hippocampus-avoidance-in-whole-brain-radiotherapy-approach
#8
Yi-Min Han, Gang Cai, Wei-Min Chai, Cheng Xu, Lu Cao, Dan Ou, Jia-Yi Chen, Youlia M Kirova
PURPOSE: Hippocampus avoidance in whole brain radiotherapy (HA-WBRT) offers the feasibility of less impaired cognitive function than conventional WBRT. The study aims to assess the radiological distribution of BMs with relation to the hippocampus and peri-hippocampus(PH) region as defined by the RTOG 0933 for better understanding of margin definition in HA-WBRT treatment planning. METHODS: Consecutive patients with diagnosis of BM from enhanced MRI between 03/2011 and 07/2016 were analyzed...
August 22, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28821205/cerebrospinal-fluid-circulating-tumor-cells-a-novel-tool-to-diagnose-leptomeningeal-metastases-from-epithelial-tumors
#9
Xuling Lin, Martin Fleisher, Marc Rosenblum, Oscar Lin, Adrienne Boire, Samuel Briggs, Yevgeniya Bensman, Brenda Hurtado, Larisa Shagabayeva, Lisa M DeAngelis, Katherine S Panageas, Antonio Omuro, Elena I Pentsova
Background: Diagnosis of leptomeningeal metastasis (LM) remains challenging due to low sensitivity of CSF cytology and infrequent unequivocal MRI findings. In a previous pilot study, we showed that rare cell capture technology (RCCT) could be used to detect circulating tumor cells (CTC) in the CSF of patients with LM from epithelial tumors. To establish the diagnostic accuracy of CSF-CTC in the diagnosis of LM, we applied this technique in a distinct, larger cohort of patients. Methods: In this institutional review board-approved prospective study, patients with epithelial tumors and clinical suspicion of LM underwent CSF-CTC evaluation and standard MRI and CSF cytology examination...
September 1, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28750354/assessing-tumor-extent-on-contrast-enhanced-spectral-mammography-versus-full-field-digital-mammography-and-ultrasound
#10
Bhavika K Patel, Sandra Alheli Garza, Sarah Eversman, Yania Lopez-Alvarez, Heidi Kosiorek, Barbara A Pockaj
OBJECTIVES: To compare breast cancer size measurements on full-field digital mammography (FFDM), contrast-enhanced spectral mammography (CEDM), and ultrasound (US), with histologic tumor size used as the reference standard. Material and methods The HIPAA complaint, IRB approved study comprised 88 women with newly diagnosed breast cancer who underwent FFDM and CEDM;74 also had US. Breast density, histologic subtype, and maximum tumor measurements were recorded. RESULTS: Pearson correlation coefficients for FFDM, US, and CEDM vs histopathology were 0...
July 12, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28743180/factors-predictive-of-occult-nipple-areolar-complex-involvement-in-patients-with-carcinoma-in-situ-of-the-breast
#11
Hyeoseong Hwang, Seho Park, Ja Seung Koo, Hyung Seok Park, Seung Il Kim, Young Up Cho, Byeong-Woo Park, Jung Hyun Yoon, Min Jung Kim, Eun-Kyung Kim
OBJECTIVES: To investigate predictors of occult nipple-areolar complex (NAC) involvement in patients with carcinoma in situ (CIS) and to validate an online probability calculator (CancerMath; www.lifemath.net/cancer/breastcancer/nipplecalc/index.php). METHODS: Mastectomized patients with CIS (n = 104) were retrospectively selected. Clinicopathology and preoperative mammography, ultrasound, and magnetic resonance imaging (MRI) findings were analyzed. RESULTS: Histopathological NAC-positivity was confirmed in 20 (19...
July 25, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28738940/factors-affecting-choice-of-treatment-for-early-stage-breast-cancer-in-west-virginia-a-10-year-experience-from-a-rural-tertiary-care-center
#12
COMPARATIVE STUDY
Patrick D Suggs, Tyler L Holliday, Stephanie N Thompson, Bryan K Richmond
Recent literature shows changing trends in use of breast conservation surgery (BCS), mastectomy, and contralateral prophylactic mastectomy (CPM) in women with early-stage breast cancer (ESBC). We analyzed factors associated with selection of these treatment modalities in a rural West Virginia tertiary care hospital. We conducted a 10-year analysis of women treated for ESBC at our institution from the institutional cancer registry. Variables were compared between patients choosing BCS versus mastectomy. In women who chose mastectomy, predictors for choice of CPM were also examined...
July 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28712698/preoperative-breast-mr-imaging-in-patients-with-primary-breast-cancer-has-the-potential-to-decrease-the-rate-of-repeated-surgeries
#13
H Preibsch, G Blumenstock, E Oberlechner, S Y Brucker, M Hahn, A Staebler, B Wiesinger, C D Claussen, K Nikolaou, K C Siegmann-Luz
PURPOSE: The impact of preoperative MRI on re-excisions and mastectomy rate is discussed controversially in the literature. Aim of this study was to evaluate the effect of preoperative breast MRI on the surgical procedure and rate of repeated surgeries. MATERIAL AND METHODS: A total of 991 consecutive patients in the years 2009 and 2010 with 1036 primary breast cancers were retrospectively analyzed. Sixty percent (599 patients with 626 cancers) received preoperative breast MRI...
July 1, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28687923/lapatinib-with-whole-brain-radiotherapy-in-patients-with-brain-metastases-from-breast-and-non-small-cell-lung-cancer-a-phase-ii-study-of-the-hellenic-cooperative-oncology-group-hecog
#14
Christos Christodoulou, Anna Kalogera-Fountzila, Vasilios Karavasilis, George Kouvatseas, Christos N Papandreou, Epaminontas Samantas, Kalliopi Varaki, Georgios Papadopoulos, Mattheos Bobos, Grigorios Rallis, Evangelia Razis, Athina Goudopoulou, Konstantine T Kalogeras, Konstantinos N Syrigos, George Fountzilas
Small molecules, mainly tyrosine kinase inhibitors, are currently used in various malignancies. Lapatinib, a dual inhibitor of EGFR/HER2 tyrosine kinases, has demonstrated effectiveness in brain metastases from HER2-overexpressing breast cancer. It also appears to sensitize EGFR-expressing cell lines to radiation. To evaluate the efficacy of lapatinib in combination with whole brain radiotherapy (WBRT) in patients with brain metastases from non-small cell lung cancer (NSCLC) and breast cancer, as assessed by volumetric analysis by MRI...
July 7, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28661075/mri-reveals-increased-tumorigenesis-following-high-fat-feeding-in-a-mouse-model-of-triple-negative-breast-cancer
#15
Devkumar Mustafi, Sully Fernandez, Erica Markiewicz, Xiaobing Fan, Marta Zamora, Jeffrey Mueller, Matthew J Brady, Suzanne D Conzen, Gregory S Karczmar
High animal fat consumption is associated with an increase in triple-negative breast cancer (TNBC) risk. Based on previous MRI studies demonstrating the feasibility of detecting very early non-palpable mammary cancers in simian virus 40 large T antigen (SV40TAg) mice, we examined the effect of dietary fat fed from weaning to young adulthood in this model of TNBC. Virgin female C3(1)SV40TAg mice (n = 16) were weaned at 3-4 weeks of age and then fed either a low fat diet (LFD) (n = 8, 3.7 kcal/g; 17.2% kcal from vegetable oil) or a high animal fat diet (HAFD) (n = 8, 5...
June 29, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28657689/neoadjuvant-chemotherapy-with-mri-monitoring-for-breast-cancer
#16
R V Dave, R Millican-Slater, D Dodwell, K Horgan, N Sharma
BACKGROUND: Neoadjuvant chemotherapy (NACT) is increasingly being offered to patients with breast cancer. No survival benefit has been demonstrated for NACT, but it may serve to reduce tumour size and improve prognosis through the attainment of a pathological complete response (pCR). The role and mode of MRI monitoring during NACT remain unclear. METHODS: Patients managed with NACT at a UK centre over 7 years were studied using a prospectively maintained database, which also included details of MRI...
August 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28643383/multiecho-pseudo-golden-angle-stack-of-stars-thermometry-with-high-spatial-and-temporal-resolution-using-k-space-weighted-image-contrast
#17
Bryant T Svedin, Allison Payne, Bradley D Bolster, Dennis L Parker
PURPOSE: Implement and evaluate a 3D MRI method to measure temperature changes with high spatial and temporal resolution and large field of view. METHODS: A multiecho pseudo-golden angle stack-of-stars (SOS) sequence with k-space weighted image contrast (KWIC) reconstruction was implemented to simultaneously measure multiple quantities, including temperature, initial signal magnitude M(0), transverse relaxation time ( T2*), and water/fat images. Respiration artifacts were corrected using self-navigation...
June 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28627463/pre-operative-assessment-of-residual-disease-in-locally-advanced-breast-cancer-patients-a-sequential-study-by-quantitative-diffusion-weighted-mri-as-a-function-of-therapy
#18
Khushbu Agarwal, Uma Sharma, Rani G Sah, Sandeep Mathur, Smriti Hari, Vurthaluru Seenu, Rajinder Parshad, Naranamangalam R Jagannathan
PURPOSE: The potential of diffusion weighted imaging (DWI) in assessing pathologic response and surgical margins in locally advanced breast cancer patients (n=38) undergoing neoadjuvant chemotherapy was investigated. METHODS: DWI was performed at pre-therapy (Tp0), after I (Tp1) and III (Tp3) NACT at 1.5T. Apparent diffusion coefficient (ADC) of whole tumor (ADCWT), solid tumor (ADCST), intra-tumoral necrosis (ADCNec) was determined. Further, ADC of 6 consecutive shells (5mm thickness each) including tumor margin to outside tumor margins (OM1 to OM5) was calculated and the data analyzed to define surgical margins...
June 13, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28610412/diagnostic-value-of-diffusion-weighted-magnetic-resonance-imaging-in-evaluation-of-metastatic-axillary-lymph-nodes-in-a-sample-of-iranian-women-with-breast-cancer
#19
Fereshteh Hasanzadeh, Fariborz Faeghi, Abdollah Valizadeh, Leyla Bayani
Objective: To evaluate the diagnostic value of diffusion weighted magnetic resonance imaging (DW-MRI) in assessment of metastases in axillary lymph nodes (ALNs) in a sample of Iranian women with breast cancer. Methods: A total of 50 axillary lymph nodes from 30 female patients with histologically verified breast cancer were assessed by 1.5 T MRI. DWI was implemented at b-values of 50, 400 and 800 s/mm2. Short axis diameter, presence of fatty hilum and apparent diffusion coefficient (ADC) values (min, max and mean) of metastatic and non-metastatic ALNs was compared...
May 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28600647/hybrid-18-f-fdg-pet-mri-might-improve-locoregional-staging-of-breast-cancer-patients-prior-to-neoadjuvant-chemotherapy
#20
Briete Goorts, Stefan Vöö, Thiemo J A van Nijnatten, Loes F S Kooreman, Maaike de Boer, Kristien B M I Keymeulen, Romy Aarnoutse, Joachim E Wildberger, Felix M Mottaghy, Marc B I Lobbes, Marjolein L Smidt
PURPOSE: Our purpose in this study was to assess the added clinical value of hybrid (18)F-FDG-PET/MRI compared to conventional imaging for locoregional staging in breast cancer patients undergoing neoadjuvant chemotherapy (NAC). METHODS: In this prospective study, primary invasive cT2-4 N0 or cT1-4 N+ breast cancer patients undergoing NAC were included. A PET/MRI breast protocol was performed before treatment. MR images were evaluated by a breast radiologist, blinded for PET images...
June 10, 2017: European Journal of Nuclear Medicine and Molecular Imaging
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