22 research outputs found

    The Role of Ultrasound in teaching Clinical Anatomy to First year Medical Students

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    Abstract Introduction: Undergraduate medical education training has recently shifted towards making content relevant and applicable for future clinical practice. However, students often encounter difficulties in visualizing the functional living human and apply clinically relevant anatomy content. Hence, the aim of this study is to evaluate the role and efficacy of ultrasound in teaching clinical anatomy to first year medical students

    Cardiac manifestations in tuberous sclerosis: A 10-year review

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    10.1046/j.1440-1754.1998.00218.xJournal of Paediatrics and Child Health343283-287JPCH

    Abdominal coarctation and Alagille syndrome.

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    10.1542/peds.106.1.e9Pediatrics106

    Large-scale genotyping identifies a new locus at 22q13.2 associated with female breast size

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    BACKGROUND: Individual differences in breast size are a conspicuous feature of variation in human females and have been associated with fecundity and advantage in selection of mates. To identify common variants that are associated with breast size, we conducted a large-scale genotyping association meta-analysis in 7169 women of European descent across three independent sample collections with digital or screen film mammograms. METHODS: The samples consisted of the Swedish KARMA, LIBRO-1 and SASBAC studies genotyped on iCOGS, a custom illumina iSelect genotyping array comprising of 211 155 single nucleotide polymorphisms (SNPs) designed for replication and fine mapping of common and rare variants with relevance to breast, ovary and prostate cancer. Breast size of each subject was ascertained by measuring total breast area (mm(2)) on a mammogram. RESULTS: We confirm genome-wide significant associations at 8p11.23 (rs10086016, p=1.3×10(-14)) and report a new locus at 22q13 (rs5995871, p=3.2×10(-8)). The latter region contains the MKL1 gene, which has been shown to impact endogenous oestrogen receptor α transcriptional activity and is recruited on oestradiol sensitive genes. We also replicated previous genome-wide association study findings for breast size at four other loci. CONCLUSIONS: A new locus at 22q13 may be associated with female breast size.KARMA and LIBRO-1 were supported by Märit and Hans Rausings Initiative Against Breast Cancer. SASBAC was supported by funding from the Agency for Science, Technology and Research of Singapore (A*STAR), the US National Institute of Health (NIH) and the Susan G. Komen Breast Cancer Foundation. All three studies are genotyped as part of the Collaborative Oncological Gene-environment Study (COGS), which is supported by the European Community's Seventh Framework Programme under grant agreement 223175 (HEALTH-F2-2009-223175) (COGS). Genotyping of the iCOGS array was funded by the European Union (HEALTH-F2-2009-223175), Cancer Research UK (C1287/A10710), the Canadian Institutes of Health Research (CIHR) for the CIHR Team in Familial Risks of Breast Cancer program and the Ministry of Economic Development, Innovation and Export Trade of Quebec (grant PSR-SIIRI-701). BCAC is funded by Cancer Research UK (C1287/A10118 and C1287/A12014). Combining the GWAS data was supported in part by the US National Institutes of Health (NIH) Cancer Post-Cancer GWAS initiative grant 1 U19 CA 148065-01 (DRIVE, part of the GAME-ON initiative). KC was financed by the Swedish Cancer Society (5128-B07-01PAF). KH was supported by the Swedish Research Council (523-2006-972) and the Swedish E Science Research Centre. This work was also supported, in part, by the Intramural Research Program of the U.S. National Cancer Institute, Department of Health and Human Services, USA. We wish to thank Aki Tuuliainen, Kimberley Sio Kim Chua, Sander Canisius, Grethe I.G. Alnæs, Torben Luders and Lodewyk Wessels for their help in data collection and analysisS

    Ultrasound-guided photoacoustic (US-PA) tomography of the breast: Biochemical differentiation using intrinsic tissue markers—lipids, collagen and hemoglobin with histopathologic correlation

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    Abstract In this pilot study, we investigated the utility of handheld ultrasound-guided photoacoustic (US-PA) imaging probe for analyzing ex-vivo breast specimens obtained from female patients who underwent breast-conserving surgery (BCS). We aimed to assess the potential of US-PA in detecting biochemical markers such as collagen, lipids, and hemoglobin, and compare these findings with routine imaging modalities (mammography, ultrasound) and histopathology results, particularly across various breast densities. Twelve ex-vivo breast specimens were obtained from female patients with a mean age of 59.7 ± 9.5 years who underwent BCS. The tissues were illuminated using handheld US-PA probe between 700 and 1100 nm across all margins and analyzed for collagen, lipids, and hemoglobin distribution. The obtained results were compared with routine imaging and histopathological assessments. Our findings revealed that lipid intensity and distribution decreased with increasing breast density, while collagen exhibited an opposite trend. These observations were consistent with routine imaging and histopathological analyses. Moreover, collagen intensity significantly differed (P < 0.001) between cancerous and normal breast tissue, indicating its potential as an additional biomarker for risk stratification across various breast conditions. The study results suggest that a combined assessment of PA biochemical information, such as collagen and lipid content, superimposed on grey-scale ultrasound findings could aid in distinguishing between normal and malignant breast conditions, as well as assist in BCS margin assessment. This underscores the potential of US-PA imaging as a valuable tool for enhancing breast cancer diagnosis and management, offering complementary information to existing imaging modalities and histopathology
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