false/accidente cerebrovascular

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[False diagnoses of strokes in emergency departments].

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BACKGROUND Diagnosing a stroke can sometimes be difficult. There are a number of mimic conditions that can lead to false diagnoses. OBJECTIVE To examine false diagnoses of acute stroke. METHODS We reviewed the medical histories with diagnoses of acute stroke -i.e. ischaemic or haemorrhagic stroke

[False negative diffusion in acute ischemic stroke].

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BACKGROUND The new techniques of magnetic resonance imaging have produced a important advance in the early diagnosis of acute ischemic stroke. The diffusion weighted imaging (DWI) has a high sensitivity and specificity in the acute ischemia. METHODS 70 years old woman with previous history of

"False negatives" and "false positives" in acute pulmonary embolism: a clinical-postmortem comparison.

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Although recent advances have been made in understanding its epidemiology, diagnosis and treatment, pulmonary embolism (PE) is still largely undetected and untreated, and the mortality rate has not appreciably changed in the last decades. The aim of this study was to: compare the postmortem

Predictors of false-positive stroke thrombectomy transfers.

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BACKGROUND Most patients with large vessel occlusion (LVO) stroke need to be transferred to receive thrombectomy. To save time, the decision to transfer often relies on clinical scales as a surrogate for LVO rather than imaging. However, clinical scales have been associated with high levels of

[False mass in the left atrium... or better: true mass in false atrium].

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We report the case of a 59-year-old man who underwent transesophageal echocardiography following a cryptogenic minor stroke. An image of a solid mass of the left atrial appendage, highly suggestive of a thrombus, was observed. The patient was treated for 10 weeks with oral anticoagulants. Because of

False-negative diffusion-weighted MRI in acute cerebellar stroke.

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OBJECTIVE To heighten physician awareness of false-negative diffusion-weighted (DW) magnetic-resonance imaging findings in patients with acute cerebellar infarction and the importance of periodically observing nystagmus after symptom onset. METHODS Between April 2007 and March 2010, we

False-negative results in brain scanning.

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There were 118 false-negative results in a series of 847 cases of proved intracranial lesions subjected to brain scanning. In patients with neoplasms false-negative results are much more likely if the site of the tumour is infratentorial or mediobasal. In patients with stroke the incidence of

[Echocardiographic aspects of false intraventricular tendons].

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A series of 4260 consecutive echocardiographic examinations, performed in 5 Cardiological Centers was examined, identifying 125 intraventricular false tendons (FTs) in 100 cases (55 normals and 45 with heart disease) of whom 31 were female and 69 male, aged 3 to 82 years. An anatomo-morphological

False-negative diffusion-weighted MR findings in acute ischemic stroke.

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OBJECTIVE Lesions associated with acute stroke are often missed by diffusion-weighted imaging (DWI), suggesting that the sensitivity of this technique for detecting acute ischemic stroke may not be as high as initially thought. Our aim was to estimate the rate of false-negative DWI studies in

Uric acid for stroke: glimmer of hope or false dawn?

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Carotid artery dissections: thrombosis of the false lumen.

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Carotid artery dissections are the second leading cause of stroke in young adults. The hemostatic response to a dissection involves exposure of the subendothelium to the intravascular environment. Platelet activation/aggregation superimposed by secondary coagulation cascade activity attempts to heal

False-positive (111)In-pentetreotide Uptake in Gastritis.

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(111)In-pentetreotide [(111)In-octreoscan] is the most widely used radiolabeled somatostatin analog for evaluating neuroendocrine tumor overexpression of somatostatin receptors. False-positives studies of somatostatin receptor scintigraphy have been reported and often the cause is unexplained but

Risk of rupture of postangiographic femoral false aneurysm.

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The surgical management of 50 false aneurysms caused by transfemoral arterial catheterization was reviewed to document the incidence and effects of rupture before repair. Twelve false aneurysms ruptured, leading to shock in six patients, distal ischaemia in three and stroke in one. The mean(s.d.)

Aortic valve endocarditis complicated by proximal false aneurysm.

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Aortic valve endocarditis remains a life-threatening condition, especially in cases of periannular complications. Aorto-ventricular discontinuity associated with proximal false aneurysm represents a severe picture caused by extensive tissue disruption and is usually associated with

Hormone replacement therapy: real concerns and false alarms.

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From 2002 to 2008, reports from the Women's Health Initiative (WHI) claimed that hormone replacement therapy (HRT) significantly increased the risks of breast cancer development, cardiac events, Alzheimer disease, and stroke. These claims alarmed the public and health professionals alike, causing an

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