Unlabelled: Transurethral resection of newly diagnosed bladder tumors (TURBT) is a hallmark ¡n the treatment of bladder cancer. We evaluated the surgeon capacity to predict bladder tumor stage (T), grade, and presence of muscular layer based upon cystoscopic characteristics during primary TURBT.
Methods: Prospective study enrolling 100 consecutive patients undergoing primary TURBT for newly diagnosed bladder cancers. Cystoscop¡c tumor characteristics at the time of TURBT was evaluated by an urology senior and a resident regarding histological grade, invasion (T stage), and presence of muscular layer in the specimen. We analyzed the surgeon's accuracy in predicting these parameters using the final histology as gold standard. In addition, the predictive capacity between seniors and residents was compared.
Results: The resident's arm correctly predicted tumor invasiveness in 76% of cases, while seniors correctly predicted 87% of cases. Regarding tumor grade, high grade cancer was reported in 78% of the specimens and 75% and 77% of them were correctly predicted by residents and seniors, respectively. Finally, 80% of the TURBT specimens had muscle representativeness. In nearly 75% of the cases, both resident and senior correctly predicted the TURBT resection depth (presence of detrusor muscle in the specimen). The positive predictive value for this parameter was 79% for the resident, and 81% for the senior, and the negative predictive value was 25% and 40%, respectively.
Conclusion: The surgeon's naked eye analysis showed a good, but limited predictive ability to detect non-muscle invasive and high-grade bladder tumors in TURBT specimens. Positive predictive value for muscle representativeness is around 80%, which reinforces the need of carrying out a careful and extensive TURBT, irrespective of the surgeon experience.
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http://dx.doi.org/10.1097/j.pbj.0000000000000179 | DOI Listing |
Skeletal Radiol
January 2025
Department of Trauma, Hand and Reconstructive Surgery, University Hospital Jena, Am Klinikum 1, 07747, Jena, Germany.
Objective: This study is aimed at evaluating the distribution of metastatic bone disease (MBD), with a particular focus on the humerus, and its association with pathological fractures. Factors for contributing to the underestimation of fracture risk were assessed, including their impact on surgical management.
Materials And Methods: We retrospectively reviewed patient records of patients undergoing surgical treatment for MBD at our institution between 2005 and 2023.
PLoS One
January 2025
National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Introduction: Haemodynamic atrioventricular delay (AVD) optimisation has primarily focussed on signals that are not easy to acquire from a pacing system itself, such as invasive left ventricular catheterisation or arterial blood pressure (ABP). In this study, standard clinical central venous pressure (CVP) signals are tested as a potential alternative.
Methods: Sixteen patients with a temporary pacemaker after cardiac surgery were studied.
J Chem Inf Model
January 2025
Department of Life Science Informatics and Data Science, B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry, Rheinische Friedrich-Wilhelms-Universität, Friedrich-Hirzebruch-Allee 5/6, Bonn D-53115, Germany.
Explaining the predictions of machine learning models is of critical importance for integrating predictive modeling in drug discovery projects. We have generated a test system for predicting isoform selectivity of phosphoinositide 3-kinase (PI3K) inhibitors and systematically analyzed correct predictions of selective inhibitors using a new methodology termed MolAnchor, which is based on the "anchors" concept from explainable artificial intelligence. The approach is designed to generate chemically intuitive explanations of compound predictions.
View Article and Find Full Text PDFJ Clin Exp Dent
December 2024
Faculty of Sciencies of Health. Universidad Nacional del Callao.
Background: To evaluate the performance of different prediction models based on machine learning to predict the presence of early childhood caries.
Material And Methods: Cross-sectional analytical study. The sociodemographic and clinical data used came from a sample of 186 children aged 3 to 6 years and their respective parents or guardians treated at a Hospital in Ica, Peru.
Sci Rep
January 2025
Van der Waals-Zeeman institute, Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands.
The freezing of water is one of the major causes of mechanical damage in materials during wintertime; surprisingly this happens even in situations where water only partially saturates the material so that the ice has room to grow. Here we perform freezing experiments in cylindrical glass vials of various sizes and wettability properties, using a dye that exclusively colors the liquid phase; this allows precise observation of the freezing front. The visualization reveals that damage occurs in partially water-saturated media when a closed liquid inclusion forms within the ice due to the freezing of the air/water meniscus.
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