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Imaging of pneumonia

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https://www.readbyqxmd.com/read/28333189/fully-automated-disc-diffusion-for-rapid-antibiotic-susceptibility-test-results-a-proof-of-principle-study
#1
Michael Hombach, Marion Jetter, Nicolas Blöchliger, Natalia Kolesnik-Goldmann, Erik C Böttger
Background: Antibiotic resistance poses a significant threat to patients suffering from infectious diseases. Early readings of antibiotic susceptibility test (AST) results could be of critical importance to ensure adequate treatment. Disc diffusion is a well-standardized, established and cost-efficient AST procedure; however, its use in the clinical laboratory is hampered by the many manual steps involved, and an incubation time of 16-18 h, which is required to achieve reliable test results...
February 17, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28323732/bronchoscopic-removal-of-a-long-standing-aspirated-iron-pill
#2
Sandeep R Somalaraju, Katherine Patil, Anthony C Campagna
While patients have been known to aspirate pills, they virtually never persist long enough to lead to complications. A spectrum of events, however, may arise especially from iron pill aspiration. If not identified and removed early, cytotoxic damage from local free-radical generation may result in airway damage. We report a case of an aspirated iron pill, which did not disintegrate and presented with chronic cough. Imaging revealed a foreign body in the right bronchus, and bronchoscopic removal allowed resolution of an associated pneumonia, without any further symptoms on subsequent surveillance...
April 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28323236/rationale-study-design-and-analysis-plan-of-the-lung-imaging-morphology-for-ventilator-settings-in-acute-respiratory-distress-syndrome-study-live-study-study-protocol-for-a-randomised-controlled-trial
#3
Matthieu Jabaudon, Thomas Godet, Emmanuel Futier, Jean-Etienne Bazin, Vincent Sapin, Laurence Roszyk, Bruno Pereira, Jean-Michel Constantin
Different acute respiratory distress syndrome (ARDS) phenotypes may explain controversial results in clinical trials. Lung-morphology is one of the ARDS-phenotypes and physiological studies suggest different responses in terms of positive-end-expiratory-pressure (PEEP) and recruitment-manoeuvres (RM) according to loss of aeration. To evaluate whether tailored ventilator regimens may impact ARDS outcomes, our group has designed a randomised-clinical-trial of ventilator settings according to lung morphology in moderate-to-severe ARDS (LIVE study)...
March 17, 2017: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/28321331/ct-patterns-of-organizing-pneumonia-in-patients-treated-with-vegf-mtor-inhibitors-for-metastatic-renal-cell-cancer-an-observational-study
#4
Sabine Dettmer, Viktor Grünwald, Thomas Fuehner, Arnold Ganser, Frank Wacker, Philipp Ivanyi, Thomas Rodt
BACKGROUND: Targeted therapies are the standard treatment in patients with metastatic renal cell carcinoma (mRCC) and are known to cause adverse pulmonary events. Organizing pneumonia (OP) with its various manifestations in computed tomography (CT) has therefore lately received more attention. PURPOSE: To describe the spectrum of CT patterns of OP in patients with mRCC receiving targeted therapies. MATERIAL AND METHODS: Seventeen patients with known therapy-related OP were analyzed retrospectively by two blinded radiologists in consensus...
February 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28316929/cytomegalovirus-pneumonitis-complicated-by-a-central-peribronchial-pattern-of-organising-pneumonia
#5
Maria M Cuadrado, Asia Ahmed, Ben Carpenter, Jeremy S Brown
We present five cases of cytomegalovirus (CMV) pneumonitis occurring in patients after recent T cell deplete allogeneic stem cell transplantation (AlloHSCT). These cases were complicated by an organising pneumonia (during the recovery period) with a predominantly central peribronchial pattern. All patients presented with evidence of active CMV pneumonitis which was treated successfully with anti-viral therapy but was followed by persistent severe dyspnoea, cough and hypoxia. High resolution computed tomography (HRCT) imaging showed widespread central peribronchial consolidation with traction bronchiectasis...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28315041/positive-pressure-ventilation-in-a-patient-with-a-right-upper-lobar-bronchocutaneous-fistula-right-upper-bronchus-occlusion-using-the-cuff-of-a-left-sided-double-lumen-endobronchial-tube
#6
Chieko Omori, Hiroaki Toyama, Yusuke Takei, Yutaka Ejima, Masanori Yamauchi
In patients with a bronchocutaneous fistula, positive pressure ventilation leads to air leakage and potential hypoxemia. A male patient with a right upper bronchocutaneous fistula was scheduled for esophageal reconstruction. His preoperative chest computed tomography image revealed aeration in the right middle and lower lobe, a large bulla in the left upper lobe, and pleural effusion and pneumonia in the left lower lobe. Therefore, left one-lung ventilation was considered to result in hypoxemia. Before anesthesia induction, the bronchocutaneous fistula was covered with gauze and film to prevent air leakage...
March 17, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28303065/bilateral-lacrimal-caruncle-lesions
#7
Yuta Okumura, Yoshiko Takai, Shunsuke Yasuda, Hiroko Terasaki
A 65-year-old man was referred to our hospital for the treatment of a lesion on the medial lacrimal canthus of both eyes. He had a history of perinuclear anti-neutrophil cytoplasmic antibodies, i.e., pANCA-positive interstitial pneumonia. Orbital magnetic resonance imaging excluded space occupying lesions, and laboratory testing excluded thyroid-related diseases. The masses were excised, and histopathological examinations showed sebaceous gland hyperplasia and inflammatory changes around the gland. In addition, the specimen from the left eye showed a retention cyst possibly caused by an infection...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28302073/image-quality-improvement-using-model-based-iterative-reconstruction-in-low-dose-chest-ct-for-children-with-necrotizing-pneumonia
#8
Jihang Sun, Tong Yu, Jinrong Liu, Xiaomin Duan, Di Hu, Yong Liu, Yun Peng
BACKGROUND: Model-based iterative reconstruction (MBIR) is a promising reconstruction method which could improve CT image quality with low radiation dose. The purpose of this study was to demonstrate the advantage of using MBIR for noise reduction and image quality improvement in low dose chest CT for children with necrotizing pneumonia, over the adaptive statistical iterative reconstruction (ASIR) and conventional filtered back-projection (FBP) technique. METHODS: Twenty-six children with necrotizing pneumonia (aged 2 months to 11 years) who underwent standard of care low dose CT scans were included...
March 16, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28296181/-white-out-after-lung-transplantation-a-multicentre-cohort-description-of-late-acute-graft-failure
#9
Stijn E Verleden, Jens Gottlieb, Adriana Dubbeldam, Geert M Verleden, Hendrik Suhling, Tobias Welte, Robin Vos, Mark Greer
Graft failure represents a leading cause of mortality following organ transplantation. Acute late-onset graft failure has not been widely reported. This paper describes the demographics, CT imaging pathology findings and treatment of patients presenting with the latter. A retrospective review of lung transplant recipients at 2 large-volume centres was performed. Acute late-onset graft failure was defined as sudden onset of bilateral infiltrates with an oxygenation index <200 without identifiable cause or concurrent extra-pulmonary organ failure...
March 12, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28281915/burden-of-community-acquired-pneumonia-in-adults-over-18%C3%A2-years-of-age
#10
Filiz Kosar, Devrim Emel Alici, Basak Hacibedel, Burcu Arpınar Yigitbas, Pejman Golabi, Caglar Cuhadaroglu
This study aimed to determine the economic burden and affecting factors in adult community-acquired pneumonia (CAP) patients (≥18 years) by retrospectively evaluating the data of two centers in Istanbul province, Turkey. Data of outpatients and inpatients with CAP from January 2013 through June 2014 were evaluated. The numbers of laboratory analyses, imaging, hospitalization days, and specialist visits were multiplied by the relevant unit costs and the costs of the relevant items per patient were obtained...
March 10, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28280256/late-onset-cerebral-toxoplasmosis-after-allogeneic-hematopoietic-stem-cell-transplantation
#11
Ahmed M Khalaf, Mahmoud A Hashim, Mohammed Alsharabati, Kenneth Fallon, Joel K Cure, Peter Pappas, Shin Mineishi, Ayman Saad
BACKGROUND Toxoplasmosis is an uncommon but potentially fatal complication following allogeneic hematopoietic stem cell transplantation (HCT). Post-transplant toxoplasmosis is often a reactivation of prior infection and typically occurs within the first 6 months of transplant. Herein, we report that cerebral toxoplasmosis may occur 22 months after allogeneic hematopoietic stem cell transplantation. CASE REPORT We describe a case of cerebral toxoplasmosis that occurred 22 months after an allogeneic HCT while the patient was on aerosolized pentamidine for Pneumocystis jiroveci pneumonia (PCP) prophylaxis...
March 10, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28269191/spectral-based-pneumonia-detection-tool-using-ultrasound-data-from-pediatric-populations
#12
O Zenteno, B Castaneda, R Lavarello
Pediatric Pneumonia is one of the principal causes of death by year on children under the age of five worldwide. The diagnosis is commonly made by clinical criteria with support from imaging tools like radiography. Lung ultrasound has been considered a low-cost and portable alternative for pneumonia imaging; however, interpretation is subjective and requires adequate training. In the present work, a pneumonia detection algorithm based on the measurement of the fundamental bandwidth downshift over depth of ultrasound radiofrequency (RF) signals is presented...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269188/automatic-pneumonia-detection-based-on-ultrasound-video-analysis
#13
Pedro Cisneros-Velarde, Malena Correa, Holger Mayta, Cynthia Anticona, Monica Pajuelo, Richard Oberhelman, William Checkley, Robert H Gilman, Dante Figueroa, Mirko Zimic, Roberto Lavarello, Benjamin Castaneda
Pneumonia is a disease which causes high mortality in children under five years old, particularly in developing countries. This paper proposes a novel application of ultrasound video analysis for the detection of pneumonia. This application is based on the processing of small video chunks, in which an image processing algorithm analyzes each frame to get some overall video statistics. Then, based on these quantities, the likeness of presence of pneumonia in the video is determined. The algorithm exploits different geometrical properties of typical anatomical and pathological features that commonly appear in lung sonography and which are already clinically typified in the literature...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267546/pulmonary-mri-at-3t-non-enhanced-pulmonary-magnetic-resonance-imaging-characterization-quotients-for-differentiation-of-infectious-and-malignant-lesions
#14
Sebastian Niko Nagel, Damon Kim, Tobias Penzkofer, Ingo G Steffen, Sebastian Wyschkon, Bernd Hamm, Stefan Schwartz, Thomas Elgeti
OBJECTIVE: To investigate 3T pulmonary magnetic resonance imaging (MRI) for characterization of solid pulmonary lesions in immunocompromised patients and to differentiate infectious from malignant lesions. MATERIALS AND METHODS: Thirty-eight pulmonary lesions in 29 patients were evaluated. Seventeen patients were immunocompromised (11 infections and 6 lymphomas) and 12 served as controls (4 bacterial pneumonias, 8 solid tumors). Ten of the 15 infections were acute...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28264029/the-epidemiology-and-clinical-features-of-melioidosis-in-far-north-queensland-implications-for-patient-management
#15
James D Stewart, Simon Smith, Enzo Binotto, William J McBride, Bart J Currie, Josh Hanson
BACKGROUND: The epidemiology, clinical presentation and management of melioidosis vary around the world. It is essential to define the disease's local features to optimise its management. PRINCIPAL FINDINGS: Between 1998 and 2016 there were 197 cases of culture confirmed melioidosis in Far North Queensland; 154 (78%) presented in the December-April wet season. 145 (74%) patients were bacteraemic, 58 (29%) were admitted to the Intensive Care Unit and 27 (14%) died; nine (33%) of these deaths occurred within 48 hours of presentation...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28261696/incidence-of-underlying-biliary-neoplasm-in-patients-after-major-hepatectomy-for-preoperative-benign-hepatolithiasis
#16
Hyeong Min Park, Young Hoe Hur, Chol Kyoon Cho, Yang Seok Koh, Hee Joon Kim, Eun Kyu Park
BACKGROUNDS/AIMS: Despite hepatolithiasis being a risk factor for biliary neoplasm including cholangiocarcinoma, the incidence of underlying biliary neoplasm is unknown in patients with preoperative benign hepatolithiasis. The aim of this study was to evaluate the incidence of underlying biliary neoplasm in patients who underwent major hepatectomy for preoperative benign hepatolithiasis. METHODS: Between March 2005 and December 2015, 73 patients who underwent major hepatectomy for preoperative benign hepatolithiasis were enrolled in this study...
November 2016: Ann Hepatobiliary Pancreat Surg
https://www.readbyqxmd.com/read/28257752/efficacy-and-safety-of-idelalisib-in-combination-with-ofatumumab-for-previously-treated-chronic-lymphocytic-leukaemia-an-open-label-randomised-phase-3-trial
#17
Jeffrey A Jones, Tadeusz Robak, Jennifer R Brown, Farrukh T Awan, Xavier Badoux, Steven Coutre, Javier Loscertales, Kerry Taylor, Elisabeth Vandenberghe, Malgorzata Wach, Nina Wagner-Johnston, Loic Ysebaert, Lyndah Dreiling, Ronald Dubowy, Guan Xing, Ian W Flinn, Carolyn Owen
BACKGROUND: Idelalisib, a selective inhibitor of PI3Kδ, is approved for the treatment of patients with relapsed chronic lymphocytic leukaemia (CLL) in combination with rituximab. We aimed to assess the efficacy and safety of idelalisib in combination with a second-generation anti-CD20 antibody, ofatumumab, in a similar patient population. METHODS: In this global, open-label, randomised, controlled phase 3 trial, we enrolled patients with relapsed CLL progressing less than 24 months from last therapy...
March 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28250859/-18-f-fdg-pet-ct-for-the-diagnosis-of-malignant-and-infectious-complications-after-solid-organ-transplantation
#18
Nastassja Muller, Romain Kessler, Sophie Caillard, Eric Epailly, Fabrice Hubelé, Céline Heimburger, Izzie-Jacques Namer, Raoul Herbrecht, Cyrille Blondet, Alessio Imperiale
PURPOSE: Infection and malignancy represent two common complications after solid organ transplantation, which are often characterized by poorly specific clinical symptomatology. Herein, we have evaluated the role of (18)F-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography/computed tomography (PET/CT) in this clinical setting. METHODS: Fifty-eight consecutive patients who underwent FDG PET/CT after kidney, lung or heart transplantation were included in this retrospective analysis...
March 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28247028/localization-and-pneumococcal-alteration-of-junction-proteins-in-the-human-alveolar-capillary-compartment
#19
Andrea Peter, Diana Fatykhova, Olivia Kershaw, Achim D Gruber, Jens Rueckert, Jens Neudecker, Mario Toennies, Torsten T Bauer, Paul Schneider, Maria Schimek, Stephan Eggeling, Norbert Suttorp, Andreas C Hocke, Stefan Hippenstiel
Loss of alveolar barrier function with subsequent respiratory failure is a hallmark of severe pneumonia. Although junctions between endo- and epithelial cells regulate paracellular fluid flux, little is known about their composition and regulation in the human alveolar compartment. High autofluorescence of human lung tissue in particular complicates the determination of subcellular protein localization. By comparing conventional channel mode confocal imaging with spectral imaging and linear unmixing, we demonstrate that background fluorescent spectra and fluorophore signals could be rigorously separated resulting in complete recovery of the specific signal at a high signal-to-noise ratio...
March 1, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28246361/new-mouse-model-for-chronic-infections-by-gram-negative-bacteria-enabling-the-study-of-anti-infective-efficacy-and-host-microbe-interactions
#20
Daniel Pletzer, Sarah C Mansour, Kelli Wuerth, Negin Rahanjam, Robert E W Hancock
Only a few, relatively cumbersome animal models enable long-term Gram-negative bacterial infections that mimic human situations, where untreated infections can last for weeks. Here, we describe a simple murine cutaneous abscess model that enables chronic or progressive infections, depending on the subcutaneously injected bacterial strain. In this model, Pseudomonas aeruginosa cystic fibrosis epidemic isolate LESB58 caused localized high-density skin and soft tissue infections and necrotic skin lesions for up to 10 days but did not disseminate in either CD-1 or C57BL/6 mice...
February 28, 2017: MBio
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