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https://www.readbyqxmd.com/read/27933170/growth-of-a-progesterone-receptor-positive-meningioma-in-a-female-patient-with-congenital-adrenal-hyperplasia
#1
T O'Shea, R K Crowley, M Farrell, S MacNally, P Govender, J Feeney, J Gibney, M Sherlock
: Meningioma growth has been previously described in patients receiving oestrogen/progestogen therapy. We describe the clinical, radiological, biochemical and pathologic findings in a 45-year-old woman with congenital adrenal hyperplasia secondary to a defect in the 21-hydroxylase enzyme who had chronic poor adherence to glucocorticoid therapy with consequent virilisation. The patient presented with a frontal headache and marked right-sided proptosis. Laboratory findings demonstrated androgen excess with a testosterone of 18...
2016: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/27931007/a-case-report-of-unusual-pneumomediastinum-after-endoscopic-sinus-surgery
#2
Ahmad I Alomari, Firas Q Alzoubi, Abdullah Khatatbeh
INTRODUCTION: Endoscopic sinus surgery is a minimally invasive procedure used to restore normal sinus ventilation and mucociliary function. It is a routine otolaryngology procedure with a success rate of about 90% for symptomatic improvement in patients with refractory chronic rhinosinusitis. Because of the proximity of the paranasal sinuses to the brain and the orbit, it cannot be performed without a potential risk of complications. In our case, without early clinical suspicion, proper diagnosis and management, this unusual occurrence of pneumomediastinum after endoscopic sinus surgery may have led to major complications or even death...
November 19, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27930555/establishment-of-the-intracranial-hemodynamic-model-based-on-contrast-medium-and-clinical-applications
#3
Yaoer Cheng, Wen He
Ischemic cerebrovascular diseases are one of the most common vascular diseases in aged people and CT perfusion (CTP) is a very popular tool to detect the ischemic changes in brain vascular. The present study aims to establish a novel intracranial hemodynamic model to simulate anterior cerebral artery blood flow, and compare the actual and simulated hemodynamic parameters of healthy people and patients with carotid stenosis or occlusion.A mathematical model of the intracranial hemodynamic was generated using MATLAB software, and data from patients with or without infarct disease (57 and 44 cases, respectively) were retrospectively collected to test the new model...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27927939/have-clinicians-adopted-the-use-of-brain-mri-for-patients-with-tia-and-minor-stroke
#4
Seemant Chaturvedi, Susan Ofner, Fitsum Baye, Laura J Myers, Mike Phipps, Jason J Sico, Teresa Damush, Edward Miech, Mat Reeves, Jason Johanning, Linda S Williams, Greg Arling, Eric Cheng, Zhangsheng Yu, Dawn Bravata
BACKGROUND: Use of MRI with diffusion-weighted imaging (DWI) can identify infarcts in 30%-50% of patients with TIA. Previous guidelines have indicated that MRI-DWI is the preferred imaging modality for patients with TIA. We assessed the frequency of MRI utilization and predictors of MRI performance. METHODS: A review of TIA and minor stroke patients evaluated at Veterans Affairs hospitals was conducted with regard to medical history, use of diagnostic imaging within 2 days of presentation, and in-hospital care variables...
December 7, 2016: Neurology
https://www.readbyqxmd.com/read/27927706/cerebral-tuberculomas-in-a-patient-with-hairy-cell-leukaemia-treated-with-cladribine
#5
Samuel Barbosa Fonseca, Júlio Rodrigues de Oliveira, Cristina Gonçalves, Virgínia Lopes
A 67-year-old man was treated with cladribine for hairy cell leukaemia. A few weeks later, he presented with persistent headaches, intermittent hypoesthesia of the right upper limb and language impairment. Brain CT scan showed 3 contrast-enhancing lesions. MRI revealed infracentimetric nodular lesions with restricted diffusion. One of the lesions was surgically removed and tested positive for acid-fast bacilli. Moreover, Mycobacterium tuberculosis was confirmed by PCR. Antituberculous drugs were prescribed for 12 months, with complete resolution of neurological deficits...
December 7, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27927702/bedside-cerebral-microdialysis-monitoring-of-delayed-cerebral-hypoperfusion-in-comatose-patients-with-poor-grade-aneurysmal-subarachnoid-haemorrhage
#6
Camille Patet, Hervé Quintard, Jean-Baptiste Zerlauth, Thomas Maibach, Laurent Carteron, Tamarah Suys, Pierre Bouzat, David Bervini, Marc Levivier, Roy T Daniel, Philippe Eckert, Reto Meuli, Mauro Oddo
BACKGROUND: Delayed cerebral ischaemia (DCI) is frequent after poor grade aneurysmal subarachnoid haemorrhage (SAH). Owing to the limited accuracy of clinical examination, DCI diagnosis is often based on multimodal monitoring. We examined the value of cerebral microdialysis (CMD) in this setting. METHODS: 20 comatose SAH participants underwent CMD monitoring-for hourly sampling of cerebral extracellular lactate/pyruvate ratio (LPR) and glucose-and brain perfusion CT (PCT)...
December 7, 2016: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/27927070/evaluation-of-antioxidant-and-hepatoprotective-effects-of-white-cabbage-essential-oil
#7
Javier Morales-López, Mónica Centeno-Álvarez, Antonio Nieto-Camacho, Mercedes G López, Elizabeth Pérez-Hernández, Nury Pérez-Hernández, Eduardo Fernández-Martínez
CONTEXT: There have been no reports of the extraction of essential oil (EO) from white cabbage [Brassica oleracea L. var. capitata (L.) Alef. f. alba DC. (Brassicaceae)] (Bocfal) or its chemical composition, antioxidant activity, or hepatoprotective effects. OBJECTIVE: To extract Bocfal EO, to identify and quantify its chemical components, to assess their antioxidant capacity, and to evaluate the hepatoprotective properties of Bocfal EO. MATERIALS AND METHODS: Bocfal EO was obtained using hydrodistillation (200 mm Hg/58 °C)...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27925304/dura-mater-graft-associated-creutzfeldt-jakob-disease-with-30-year-incubation-period
#8
Masahiro Shijo, Hiroyuki Honda, Sachiko Koyama, Koji Ishitsuka, Koichiro Maeda, Junya Kuroda, Mitsugu Tanii, Takanari Kitazono, Toru Iwaki
Over 60% of all patients with dura mater graft-associated Creutzfeldt-Jakob disease (dCJD) have been diagnosed in Japan. The incubation period has ranged from 1 to 30 years and the age at onset from 15 to 80 years. Here, we report a 77-year-old male Japanese autopsied dCJD case with the longest incubation period so far in Japan. He received a cadaveric dural graft at the right cranial convexity following a craniotomy for meningioma at the age of 46. At 30 years post-dural graft placement, disorientation was observed as an initial symptom of dCJD...
December 7, 2016: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/27921074/initial-performance-studies-of-a-wearable-brain-positron-emission-tomography-camera-based-on-autonomous-thin-film-digital-geiger-avalanche-photodiode-arrays
#9
Charles R Schmidtlein, James N Turner, Michael O Thompson, Krishna C Mandal, Ida Häggström, Jiahan Zhang, John L Humm, David H Feiglin, Andrzej Krol
Using analytical and Monte Carlo modeling, we explored performance of a lightweight wearable helmet-shaped brain positron emission tomography (PET), or BET camera, based on thin-film digital Geiger avalanche photodiode arrays with Lutetium-yttrium oxyorthosilicate (LYSO) or [Formula: see text] scintillators for imaging in vivo human brain function of freely moving and acting subjects. We investigated a spherical cap BET and cylindrical brain PET (CYL) geometries with 250-mm diameter. We also considered a clinical whole-body (WB) LYSO PET/CT scanner...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/27917312/a-4d-ct-digital-phantom-of-an-individual-human-brain-for-perfusion-analysis
#10
Rashindra Manniesing, Christoph Brune, Bram van Ginneken, Mathias Prokop
Brain perfusion is of key importance to assess brain function. Modern CT scanners can acquire perfusion maps of the cerebral parenchyma in vivo at submillimeter resolution. These perfusion maps give insights into the hemodynamics of the cerebral parenchyma and are critical for example for treatment decisions in acute stroke. However, the relations between acquisition parameters, tissue attenuation curves, and perfusion values are still poorly understood and cannot be unraveled by studies involving humans because of ethical concerns...
2016: PeerJ
https://www.readbyqxmd.com/read/27917212/stroke-in-patients-with-diabetes-mellitus-a-study-from-north-western-nigeria
#11
Lukman Owolabi, Mansur Nagode, Aliyu Ibrahim, Andrew Uloko, Ibrahim Gezawa, Mohammad Datti
BACKGROUND: Stroke is one of the major causes of morbidity and mortality worldwide and apart from being exceedingly harmful in diabetics, stroke is a disabling disorder. The study was undertaken to describe the clinical characteristics, outcome pattern and predictors of mortality in a cohort of diabetic patients presenting with stroke in two tertiary health facilities in North Western Nigeria. METHOD: Out of all stroke patients seen from June 2007 to February 2011, persons with diabetes mellitus presenting with stroke in the emergency unit of the two tertiary hospitals in Kano were consecutively recruited for the study...
September 2016: African Health Sciences
https://www.readbyqxmd.com/read/27916638/therapeutical-options-in-the-management-of-carotid-dissection
#12
Ombretta Martinelli, Salvatore Venosi, Jamila BenHamida, Alban Malay, Cristina Belli, Francesco Giosue' Irace, Roberto Gattuso, Giacomo Frati, Bruno Gossetti, Luigi Irace
OBJECTIVE: The best management of carotid artery dissection (CAD) is still controversial ranging from antiplatelet medication to open surgery or endovascular treatment. In this retrospective study we assessed the safety and efficacy of endovascular stent angioplasty for the treatment of CAD. METHODS: From February 2006 to February 2016, 44 patients (28 females and 16 males, age range 25-65 years, mean 42) with CAD were included in this study. The internal carotid artery (ICA) dissection was spontaneous in origin in 32 patients and post-traumatic in the remaining 12 (1 case it was bilateral)...
December 1, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27915431/time-dependent-postmortem-redistribution-of-morphine-and-its-metabolites-in-blood-and-alternative-matrices-application-of-ct-guided-biopsy-sampling
#13
Sandra N Staeheli, Dominic Gascho, Lars C Ebert, Thomas Kraemer, Andrea E Steuer
Interpretation of postmortem morphine concentrations in forensic toxicology provides several pitfalls such as missing information on tolerance, analyte stability, or postmortem redistribution (PMR). Recently, it had been shown that computed tomography (CT)-guided collection of biopsies using a robotic arm (virtobot) provides a valuable strategy for systematic studies on time-dependent PMR. Using this technique, time-dependent PMR of morphine and its metabolites was investigated in 12 cases. At admission to the institute (t1), femoral and heart blood (right ventricle) as well as biopsies from the right lung, the right kidney, liver, spleen, and muscle tissue were collected...
December 3, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27915393/role-of-prothrombin-complex-concentrate-pcc-in-acute-intracerebral-hemorrhage-with-positive-cta-spot-sign-an-institutional-experience-at-a-regional-and-state-designated-stroke-center
#14
Razia Rehmani, Angela Han, Jawaad Hassan, Jeffrey Farkas
PURPOSE: Our objective is to identify the effect of prothrombin complex concentrate (PCC) in acute intracranial hemorrhage (ICH) by evaluating intraparenchymal hematoma expansion between initial and follow-up head CT at 5-24 h, in those with positive CTA spot sign (CTASS). CTASS is an independent predictor of hematoma growth (1). Acute ICH, regardless of etiology, can present with quick mental status decline often resulting in irreversible brain damage. Hematoma expansion appears to be a modifiable predictor of clinical outcome and an appropriate target for medical therapy...
December 3, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27915035/hyperinsulinaemic-hypoglycaemia-in-children-and-adults
#15
REVIEW
Pratik Shah, Sofia A Rahman, Huseyin Demirbilek, Maria Güemes, Khalid Hussain
Pancreatic β cells are functionally programmed to release insulin in response to changes in plasma glucose concentration. Insulin secretion is precisely regulated so that, under normal physiological conditions, fasting plasma glucose concentrations are kept within a narrow range of 3·5-5·5 mmol/L. In hyperinsulinaemic hypoglycaemia, insulin secretion becomes dysregulated (ie, uncoupled from glucose metabolism) so that insulin secretion persists in the presence of low plasma glucose concentrations. Hyperinsulinaemic hypoglycaemia is the most common cause of severe and persistent hypoglycaemia in neonates and children...
November 30, 2016: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/27911066/-conservative-management-of-liver-trauma-and-its-complications-current-gold-standard
#16
R Gander, J A Molino, S Santiago, A Laín, G Guillén, C Giné, G Royo, S López, M Pérez, I Díez, S Cañadas, J Lloret, J Bueno
INTRODUCTION: The liver is the second most frequently involved organ in abdominal trauma in children. The aim of this study was to review the characteristics of liver traumas (LT) in children, its treatment and complications. MATERIAL AND METHODS: Retrospective study of patients with LT treated between 2010-2014. We analyzed data regarding diagnosis, conservative management (CM), complications and treatment. RESULTS: Twenty-four patients of LT with a mean age of 9...
January 25, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/27910823/optimized-mlaa-for-quantitative-non-tof-pet-mr-of-the-brain
#17
Didier Benoit, Claes N Ladefoged, Ahmadreza Rezaei, Sune H Keller, Flemming L Andersen, Liselotte Højgaard, Adam E Hansen, Søren Holm, Johan Nuyts
For quantitative tracer distribution in positron emission tomography, attenuation correction is essential. In a hybrid PET/CT system the CT images serve as a basis for generation of the attenuation map, but in PET/MR, the MR images do not have a similarly simple relationship with the attenuation map. Hence attenuation correction in PET/MR systems is more challenging. Typically either of two MR sequences are used: the Dixon or the ultra-short time echo (UTE) techniques. However these sequences have some well-known limitations...
December 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27909929/signal-to-noise-ratio-and-dose-to-the-lens-of-the-eye-for-computed-tomography-examination-of-the-brain-using-an-automatic-tube-current-modulation-system
#18
Supawitoo Sookpeng, Chitsanupong Butdee
PURPOSE: The study aimed to evaluate the image quality in terms of signal-to-noise ratio (SNR) and dose to the lens of the eye and the other nearby organs from the CT brain scan using an automatic tube current modulation (ATCM) system with or without CT gantry tilt is needed. METHODS: An anthropomorphic phantom was scanned with different settings including use of different ATCM, fixed tube current time product (mAs) settings and degree angles of gantry tilt. Gafchromic film XR-QA2 was used to measure absorbed dose of the organs...
December 2, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27908187/dosimetric-characterization-of-mri-only-treatment-planning-for-brain-tumors-in-atlas-based-pseudo-ct-images-generated-from-standard-t1-weighted-mr-images
#19
Benjamin Demol, Christine Boydev, Juha Korhonen, Nick Reynaert
PURPOSE: Magnetic resonance imaging (MRI)-only radiotherapy treatment planning requires accurate pseudo-CT (pCT) images for precise dose calculation. The current work introduced an atlas-based method combined with MR intensity information. pCT analyses and Monte Carlo dose calculations for intracranial stereotactic treatments were performed. METHODS: Twenty-two patients, representing 35 tumor targets, were scanned using a 3D T1-weighted MRI sequence according to the clinical protocol...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27908148/local-attenuation-curve-optimization-framework-for-high-quality-perfusion-maps-in-low-dose-cerebral-perfusion-ct
#20
Vincent Van Nieuwenhove, Geert Van Eyndhoven, K Joost Batenburg, Nico Buls, Jef Vandemeulebroucke, Jan De Beenhouwer, Jan Sijbers
PURPOSE: Cerebral perfusion x-ray computed tomography (PCT) is a powerful tool for noninvasive imaging of hemodynamic information throughout the brain. Conventional PCT requires the brain to be imaged multiple times during the perfusion process, and hence radiation dose is a major concern. The authors propose a PCT reconstruction algorithm that allows for lowering the dose while maintaining a high quality of the perfusion maps. It relies on an accurate estimation of the arterial input function (AIF), which in turn depends on the quality of the attenuation curves in the arterial region...
December 2016: Medical Physics
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