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Related Concept Videos

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

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The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
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Assessment of the Cardiovascular System III: Palpation01:27

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Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...
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Varicose Veins II: Diagnostic Studies and Interprofessional Care01:26

Varicose Veins II: Diagnostic Studies and Interprofessional Care

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Varicose veins, or varicosities, develop when the valves in the veins, which control blood flow, weaken or damage. It causes blood to pool and the veins to enlarge. Understanding the clinical manifestations, diagnostic approaches, and management options for varicose veins is crucial for effective treatment and relief.Clinical manifestationsClinical manifestations of varicose veins include a heavy, achy feeling or pain after prolonged standing or sitting. This discomfort can often be relieved by...
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Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

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Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
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Veins of Head and Neck01:19

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The blood drainage from the head and neck is primarily managed by three pairs of veins: the external jugular, internal jugular, and vertebral veins. The external jugular veins drain superficial scalp and face structures, passing over the sternocleidomastoid muscles to empty into the subclavian veins.
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Myasthenia Gravis: Diagnostic Tests01:15

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Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
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Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
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Central vein sign: A putative diagnostic marker for multiple sclerosis.

Lara Chaaban1, Nancy Safwan1, Hussein Moussa2

  • 1Department of Agriculture and Food Sciences, American University of Beirut, Beirut, Lebanon.

Acta Neurologica Scandinavica
|November 19, 2021
PubMed
Summary

The central vein sign (CVS) is a key biomarker for diagnosing multiple sclerosis (MS), accurately distinguishing it from other white matter diseases. Various criteria, including the 40% rule, enhance its diagnostic value.

Keywords:
T2*-weighted imagingcentral vein signlesionsmultiple sclerosissusceptibility-weighted imaging

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Area of Science:

  • Neuroimaging
  • Neurology
  • Biomarkers

Background:

  • The central vein sign (CVS) is an established magnetic resonance imaging (MRI) biomarker for multiple sclerosis (MS).
  • Susceptibility-based MRI venography enables in vivo detection of CVS.
  • Standardized definitions like the 40% rule aid in differentiating MS lesions from other pathologies.

Purpose of the Study:

  • To review the literature on the central vein sign (CVS) in multiple sclerosis (MS).
  • To evaluate the added diagnostic value of CVS in MS and its differentiation from other vasculopathies.
  • To explore the histopathology, automated assessment methods, and role of vascular comorbidities in MS diagnosis.

Main Methods:

  • Literature review of existing studies on CVS in MS.
  • Evaluation of diagnostic criteria and performance metrics (sensitivity, specificity, accuracy).
  • Review of histopathological findings and automated CVS assessment techniques.

Main Results:

  • CVS demonstrates high accuracy in differentiating MS from MS mimics.
  • Established criteria (40% rule, 50% rule, lesion count criteria) show robust performance.
  • Recognition and recommendations from major MS imaging consortia (MAGNIMS, CMSC, NAIMS).

Conclusions:

  • CVS is a valuable biomarker for MS diagnosis and differentiation from other diseases.
  • Standardized criteria improve the reliability and application of CVS in clinical practice.
  • Further research into automated methods and vascular comorbidities can refine MS diagnosis.