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Digital Pathology

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https://www.readbyqxmd.com/read/29053402/what-are-we-missing-false-negative-cancers-at-multiparametric-mr-imaging-of-the-prostate
#1
Samuel Borofsky, Arvin K George, Sonia Gaur, Marcelino Bernardo, Matthew D Greer, Francesca V Mertan, Myles Taffel, Vanesa Moreno, Maria J Merino, Bradford J Wood, Peter A Pinto, Peter L Choyke, Baris Turkbey
Purpose To characterize clinically important prostate cancers missed at multiparametric (MP) magnetic resonance (MR) imaging. Materials and Methods The local institutional review board approved this HIPAA-compliant retrospective single-center study, which included 100 consecutive patients who had undergone MP MR imaging and subsequent radical prostatectomy. A genitourinary pathologist blinded to MP MR findings outlined prostate cancers on whole-mount pathology slices. Two readers correlated mapped lesions with reports of prospectively read MP MR images...
October 20, 2017: Radiology
https://www.readbyqxmd.com/read/29052070/the-feasibility-of-laparoscopic-rectal-resection-in-patients-undergoing-reoperation-after-transanal-endoscopic-microsurgery-tem
#2
M Ortenzi, R Ghiselli, A Paolucci, M Guerrieri
BACKGROUND: The success of transanal endoscopic microsurgery (TEM) for early rectal cancer depends on proper indications and strict patient selection. When unfavorable pathologic features are identified after TEM operation, total mesorectal excision is recommended to minimize the risk of recurrence. In this study, data were collected in a retrospective series of patients to determine the results of laparoscopic reoperation after TEM. METHODS: All patients underwent an accurate rectal-digital examination and clinical tumor staging by transanal endosonography, CT, and/or MRI...
October 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29049424/diagnostic-accuracy-of-virtual-pathology-vs-traditional-microscopy-in-a-large-dermatopathology-study
#3
Michael N Kent, Thomas G Olsen, Theresa A Feeser, Katherine C Tesno, John C Moad, Michael P Conroy, Mary Jo Kendrick, Sean R Stephenson, Michael R Murchland, Ayesha U Khan, Elizabeth A Peacock, Alexa Brumfiel, Michael A Bottomley
Importance: Digital pathology represents a transformative technology that impacts dermatologists and dermatopathologists from residency to academic and private practice. Two concerns are accuracy of interpretation from whole-slide images (WSI) and effect on workflow. Studies of considerably large series involving single-organ systems are lacking. Objective: To evaluate whether diagnosis from WSI on a digital microscope is inferior to diagnosis of glass slides from traditional microscopy (TM) in a large cohort of dermatopathology cases with attention on image resolution, specifically eosinophils in inflammatory cases and mitotic figures in melanomas, and to measure the workflow efficiency of WSI compared with TM...
October 11, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/29041870/fluid-biomarker-and-electrophysiological-outcome-measures-for-progressive-ms-trials
#4
Christian Barro, Letizia Leocani, David Leppert, Giancarlo Comi, Ludwig Kappos, Jens Kuhle
Progressive multiple sclerosis (MS) is characterized by insidious clinical worsening that is difficult to accurately quantify and predict. Biofluid markers and electrophysiological measures are potential candidate outcome measures in clinical trials, allowing the quantification of nervous damage occurring in the disease. Neurofilaments are highly specific neuronal proteins. They may have come closest to such applications by their higher concentrations repeatedly demonstrated in cerebrospinal fluid (CSF) in all stages of MS, during relapses, their responsiveness to disease-modifying treatments in relapsing and progressive MS and their associations with measures of inflammatory and degenerative magnetic resonance imaging (MRI) outcomes...
October 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29041796/prevalence-of-eye-pathology-in-a-group-of-diabetic-patients-at-national-district-hospital-outpatient-department-in-bloemfontein-south-africa
#5
Joleen P Cairncross, Wilhelm J Steinberg, Mathys J Labuschagne
BACKGROUND: Diabetic retinopathy is the third most common cause of blindness after cataracts and glaucoma in South Africa. Primary healthcare interventions providing eye care services play an important role in preventing complications. AIM: To determine the prevalence of eye pathology in a group of diabetic patients at National District Hospital by screening for diabetes-associated ocular pathology. SETTING: Outpatients Department run by Department of Family Medicine at National District Hospital in Bloemfontein from June to July 2014...
September 27, 2017: African Journal of Primary Health Care & Family Medicine
https://www.readbyqxmd.com/read/29038239/correlated-disruption-of-resting-state-fmri-lpf-and-spike-connectivity-between-area-3b-and-s2-following-spinal-cord-injury-in-monkeys
#6
Ruiqi Wu, Pai-Feng Yang, Li Min Chen
This study aims to understand how functional connectivity (FC) between areas 3b and S2 alters following input-deprivation and the neuronal basis of disrupted FC of resting state fMRI signals. We combined submillimeter fMRI with microelectrode recordings to localize the deafferented digit regions in areas 3b and S2 by mapping tactile stimulus-evoked fMRI activations before and after cervical dorsal column lesion (DCL) in each male monkey. An average afferents disruption of 97% significantly reduced fMRI, LFP and spike responses to stimuli in both areas...
October 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29033472/histopathological-analysis-of-the-f344-rat-lung-upon-exposure-to-retenoic-acid-ovalbumin-mold-spores-and-citral
#7
Ibrahim O Farah, Carlene Holt-Gray, Joseph A Cameron, Michelle Tucci, Hamed Benghuzzi
The paradoxical role of retinoic acid (All Trans Retinoic Acid; ATRA) in the development of allergic and/or inflammatory complications in contrast to a therapeutic modality for lung pathology is not well understood or established in the literature. As well, the role of Citral (inhibitor of retinoid function; a non-toxic chemical that exists in two forms (diethyl; C1 or cis-trans dimethyl; C2), in the reversal of retinoic acid, ovalbumin and allergic mold spore pathophysiology is also not well ascertained under an in vivo setting...
March 2017: Biomedical Sciences Instrumentation
https://www.readbyqxmd.com/read/29031628/ultrasound-and-the-complete-urologist-part-1-methodology
#8
Eugene M Fine
Computed tomography (CT) scanning is considered as the imaging study of choice for asymptomatic microhematuria according to the American Urological Association guidelines. For those patients with persistence of microhematuria after a negative initial examination, the guidelines suggest repeating the evaluation including CT scanning within 3 to 5 years. However, the cost and risk involved for utilizing this technology going forward is an issue, especially when the yield of finding significant pathology on subsequent imaging studies is exceedingly low...
October 2017: Urologic Oncology
https://www.readbyqxmd.com/read/29023489/spatiotemporal-variations-in-gene-expression-histology-and-biomechanics-in-an-ovine-model-of-tendinopathy
#9
Sara Biasutti, Andrew Dart, Margaret Smith, Carina Blaker, Elizabeth Clarke, Leo Jeffcott, Christopher Little
Flexor tendinopathy is a common problem affecting humans and animals. Tendon healing is poorly understood and the outcomes of conservative and surgical management are often suboptimal. While often considered a localized injury, recent evidence indicates that in the short term, tendinopathic changes are distributed widely throughout the tendon, remote from the lesion itself. Whether these changes persist throughout healing is unknown. The aim of this study was to document gene expression, histopathological and biomechanical changes that occur throughout the superficial digital flexor tendon (SDFT) up to 16 weeks post-injury, using an ovine surgical model of tendinopathy...
2017: PloS One
https://www.readbyqxmd.com/read/29020884/pathologic-reporting-of-tall-cell-variant-of-papillary-thyroid-cancer-have-we-reached-a-consensus
#10
Juan Hernandez-Prera, Rosalie Machado, Sylvia L Asa, Zubair W Baloch, William C Faquin, Ronald Ghossein, Virginia A LiVolsi, Ricardo V Lloyd, Ozgur Mete, Yuri E Nikiforov, Raja Seethala, Saul Suster, Lester D R Thompson, Andrew Turk, Peter M Sadow, Mark L Urken, Bruce M Wenig
BACKGROUND: Tall cell variant (TCV) is widely believed to be a more aggressive subtype of papillary thyroid carcinoma (PTC). Despite the significance of TCV with respect to risk stratification and therapeutic decision making, its diagnosis is subject to interobserver variability. We aim to determine the level of agreement among expert pathologists in the identification and reporting of TCV. METHODS: 17 surgical resections for thyroid cancer containing the diagnostic term "tall cell" in their pathology reports and 22 cases diagnosed as classical PTC were selected...
October 12, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29019941/the-contribution-of-adipose-tissue-derived-mesenchymal-stem-cells-and-platelet-rich-plasma-to-the-treatment-of-chronic-equine-laminitis-a-proof-of-concept
#11
Mario Angelone, Virna Conti, Cristiano Biacca, Beatrice Battaglia, Laura Pecorari, Francesco Piana, Giacomo Gnudi, Fabio Leonardi, Roberto Ramoni, Giuseppina Basini, Silvia Dotti, Sabrina Renzi, Maura Ferrari, Stefano Grolli
Laminitis, a highly debilitating disease of the foot in ungulates, is characterized by pathological changes of the complex lamellar structures that maintain the appendicular skeleton within the hoof. Laminitis is a multifactorial disease that involves perturbation of the vascular, hematological, and inflammatory homeostasis of the foot. Interestingly, the pathogenesis of the disease resembles what is observed in metabolic syndromes and sepsis-induced organ failure in humans and animals. We hypothesized that local administration of mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) might contribute to establishing an anti-inflammatory and pro-angiogenic environment, and could stimulate the injured tissue in order to restore its functional integrity...
October 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29019160/the-role-of-cognitive-reserve-in-cognitive-aging-what-we-can-learn-from-parkinson-s-disease
#12
Nicoletta Ciccarelli, Maria Rita Lo Monaco, Domenico Fusco, Davide Liborio Vetrano, Giuseppe Zuccalà, Roberto Bernabei, Vincenzo Brandi, Maria Stella Pisciotta, Maria Caterina Silveri
Parkinson's disease (PD) typically occurs in elderly people and some degree of cognitive impairment is usually present. Cognitive reserve (CR) theory was proposed to explain the discrepancy between the degree of brain pathologies and clinical manifestations. We administered a comprehensive neuropsychological battery to 35 non-demented participants affected by PD. All participants underwent also the Cognitive Reserve Index questionnaire and the Brief Intelligence Test as proxies for CR. Relationships between CR and cognitive performance were investigated by linear regression analyses, adjusting for significant confounding factors...
October 11, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29018612/segmentation-and-classification-of-colon-glands-with-deep-convolutional-neural-networks-and-total-variation-regularization
#13
Philipp Kainz, Michael Pfeiffer, Martin Urschler
Segmentation of histopathology sections is a necessary preprocessing step for digital pathology. Due to the large variability of biological tissue, machine learning techniques have shown superior performance over conventional image processing methods. Here we present our deep neural network-based approach for segmentation and classification of glands in tissue of benign and malignant colorectal cancer, which was developed to participate in the GlaS@MICCAI2015 colon gland segmentation challenge. We use two distinct deep convolutional neural networks (CNN) for pixel-wise classification of Hematoxylin-Eosin stained images...
2017: PeerJ
https://www.readbyqxmd.com/read/28990676/arthroscopic-approach-and-anatomy-of-the-stifle-joint-in-the-rabbit
#14
Sarah Torrey Peters, Markus Wilke, Tanja Schmid
OBJECTIVE: To describe a technique and normal findings for arthroscopy of the stifle in rabbits. STUDY DESIGN: Cadaver study. ANIMALS: Twenty cadaveric stifles from New Zealand White rabbits were examined. METHODS: The arthroscope was placed through a medial portal, and instrument portals were created on the lateral aspect of the joint. The same portals were used for examination of the entire joint and palpation of structures with a probe...
October 9, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28990642/quantitative-phase-microscopy-for-evaluation-of-intestinal-inflammation-and-wound-healing-utilizing-label-free-biophysical-markers
#15
REVIEW
Dominik Bettenworth, Arne Bokemeyer, Christopher Poremba, Nik Sheng Ding, Steffi Ketelhut, Philipp Lenz, Björn Kemper
Inflammatory bowel diseases (IBD) are inflammatory disorders of the gastrointestinal tract characterized by a chronic relapsing disease course. As uncontrolled intestinal inflammation can result in severe disease complications, recent treatment targets of IBD evolved toward seeking the absence of mucosal and histological inflammation. However, this approach requires adequate histological evaluation of IBD disease activity. The diagnostic challenge of histological examination of intestinal inflammation is documented by the multitude of proposed histological scoring systems...
October 9, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28981408/multi-instance-multi-label-learning-for-multi-class-classification-of-whole-slide-breast-histopathology-images
#16
Caner Mercan, Selim Aksoy, Ezgi Mercan, Linda G Shapiro, Donald L Weaver, Joann G Elmore
Digital pathology has entered a new era with the availability of whole slide scanners that create high-resolution images of full biopsy slides. Consequently, the uncertainty regarding the correspondence between the image areas and the diagnostic labels assigned by pathologists at the slide level, and the need for identifying regions that belong to multiple classes with different clinical significance have emerged as two new challenges. However, generalizability of the state-of-theart algorithms, whose accuracies were reported on carefully selected regions of interest (ROI) for the binary benign versus cancer classification, to these multi-class learning and localization problems is currently unknown...
October 2, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28980740/whole-slide-imaging-at-primary-pathological-diagnosis-validation-of-whole-slide-imaging-based-primary-pathological-diagnosis-at-twelve-japanese-academic-institutes
#17
Kazuhiro Tabata, Ichiro Mori, Takeshi Sasaki, Tomoo Itoh, Taizo Shiraishi, Naoki Yoshimi, Ichiro Maeda, Oi Harada, Kiyomi Taniyama, Daiki Taniyama, Mika Watanabe, Yoshiki Mikami, Shuntaro Sato, Yukio Kashima, Shota Fujimura, Junya Fukuoka
Several reports have demonstrated the use of whole-slide imaging (WSI) for primary pathological diagnosis, but no such studies have been published from Asia. We retrospectively collected 1070 WSI specimens from 900 biopsies and small surgeries conducted in nine hospitals. Nine pathologists, who participated in this study, trained for the College of American Pathologists guidelines, reviewed the specimens and made diagnoses based on digitized, 20× or 40× optically magnified images with a WSI scanner. After a washout interval of over 2 weeks, the same observers reviewed conventional glass slides and diagnosed them by light microscopy...
October 5, 2017: Pathology International
https://www.readbyqxmd.com/read/28975849/computer-vision-syndrome-implications-for-the-occupational-health-nurse
#18
Ann Regina Lurati
Computers and other digital devices are commonly used both in the workplace and during leisure time. Computer vision syndrome (CVS) is a new health-related condition that negatively affects workers. This article reviews the pathology of and interventions for CVS with implications for the occupational health nurse.
October 1, 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28973396/incidental-prostate-cancer-in-patients-with-muscle-invasive-bladder-cancer-who-underwent-radical-cystoprostatectomy
#19
Toshikazu Tanaka, Takuya Koie, Chikara Ohyama, Yasuhiro Hashimoto, Atsushi Imai, Yuki Tobisawa, Shingo Hatakeyama, Hayato Yamamoto, Tohru Yoneyama, Hirotaka Horiguchi, Hirotake Kodama, Takahiro Yoneyama
Objectives: The aim of this study was to analyze the features of incidentally detected prostate cancer (PCa) in radical cystoprostatectomy (RCP) specimens to determine their pathological characteristics and clinical significance. Methods: In this retrospective study, we reviewed the clinical and pathological records of 431 consecutive patients with muscle-invasive bladder cancer who underwent RCP at Hirosaki University. Of these, we focused on 237 male patients with prostate-specific antigen (PSA) measurements and digital rectal examinations (DRE) that were recorded prior to the RCP...
August 18, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28971622/perspectives-potentials-and-trends-of-ex-vivo-and-in-vivo-optical-molecular-pathology
#20
Christoph Krafft, Ferdinand von Eggeling, Orlando Guntinas-Lichius, Arndt Hartmann, Maximilian J Waldner, Markus F Neurath, Jürgen Popp
It is pivotal for medical applications, such as non-invasive histopathologic characterization of tissue, to realize label-free and molecule-specific representation of morphologic and biochemical composition in real-time with subcellular spatial resolution. This unmet clinical need requires new approaches for rapid and reliable real-time assessment of pathologies to complement established diagnostic tools. Photonic imaging combined with digitalization offers the potential to provide the clinician the requested information both under in vivo and ex vivo conditions...
October 3, 2017: Journal of Biophotonics
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