Granulosa cell tumors (GCTs) can have a wide variety of appearances on magnetic resonance imaging (MRI), ranging from entirely solid to multilocular cystic, suggesting that GCTs undergo remarkable morphological changes during growth. These temporal changes in MRI appearance of individual GCTs have not been documented. A 54-year-old asymptomatic postmenopausal woman was referred to our department for a small ovarian mass. This 3-cm solid mass showed high intensity on diffusion-weighted MRI and low intensity on apparent diffusion coefficient mapping. Close clinical follow-up was recommended, but she did not return to our hospital until the age of 63, when she was referred for a large ovarian tumor. MRI showed a 15-cm multilocular cyst containing a solid component with hemorrhaging. Postoperative diagnosis was adult GCT (AGCT). These temporal changes demonstrate a possible reason why GCTs can have such a wide range of MRI appearance. This knowledge might promote accurate preoperative diagnosis of AGCTs.
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http://dx.doi.org/10.1111/jog.14995 | DOI Listing |
J Natl Cancer Inst
January 2025
Division of Pediatric Hematology & Oncology, University of Minnesota, Minneapolis, MN, USA.
Purpose: It is not known whether temporal changes in childhood cancer therapy have reduced risk of subsequent malignant neoplasms (SMNs) of the central nervous system (CNS), a frequently fatal late effect of cancer therapy.
Methods: Five-year survivors of primary childhood cancers diagnosed between 1970-1999 in the Childhood Cancer Survivor Study with a subsequent CNS SMN were identified. Cumulative incidence rates and standardized incidence ratios (SIR) were compared among survivors diagnosed between 1970-1979 (N = 6223), 1980-1989 (N = 9680), and 1990-1999 (N = 8999).
J Am Heart Assoc
January 2025
Division of Cardiovascular Science, Faculty of Biology, Medicine and Health The University of Manchester Manchester UK.
Background: Heart failure with preserved ejection fraction (HFpEF) is linked to prolonged endoplasmic reticulum (ER) stress. P21-activated kinase 2 (Pak2) facilitates a protective ER stress response. This study explores the mechanism and role of Pak2 in HFpEF pathology.
View Article and Find Full Text PDFSmall Methods
January 2025
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN, TN 37830, USA.
Understanding ferroelectric domain wall dynamics at the nanoscale across a broad range of timescales requires measuring domain wall position under different applied electric fields. The success of piezoresponse force microscopy (PFM) as a tool to apply local electric fields at different positions and imaging their changing position, together with the information obtained from associated switching spectroscopies has fueled numerous studies of the dynamics of ferroelectric domains to determine the impact of intrinsic parameters such as crystalline order, defects and pinning centers, as well as boundary conditions such as environment. However, the investigation of sub-coercive reversible domain wall vibrational modes requires the development of new tools that enable visualizing domain wall motion under varying applied fields with high temporal and spatial resolution while also accounting for spurious electrostatic effects.
View Article and Find Full Text PDFJ Biophotonics
January 2025
Univ. Grenoble Alpes, CNRS, LIPhy, Grenoble, France.
A challenge in neuroimaging is acquiring frame sequences at high temporal resolution from the largest possible number of pixels. Measuring 1%-10% fluorescence changes normally requires 12-bit or higher bit depth, constraining the frame size allowing imaging in the kHz range. We resolved Ca or membrane potential signals from cell populations or single neurons in brain slices by acquiring fluorescence at 8-bit depth and by binning pixels offline, achieving unprecedented frame sizes at kHz rates.
View Article and Find Full Text PDFHealth Sci Rep
January 2025
Vicerrectorado de Investigación Universidad San Ignacio de Loyola Lima Peru.
Purpose: To evaluate the current trends and spatiotemporal dynamics of microplastic research and public health through a scientometric study from 2019 to 2024.
Methods: An observational and descriptive approach was applied to the published literature on microplastics and public health published in January 2019 and July 2024. A quantitative approach was used to analyze document production, author-country collaborations and thematic evolution.
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