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The McDonald criteria maintained a scheme for diagnosing MS based solely on clinical grounds but also proposed for the first time that when clinical evidence is lacking, magnetic resonance imaging (MRI) findings can serve as surrogates for dissemination in space (DIS) and/or time (DIT) to diagnose MS. [5] The criteria try to prove the existence ...
Among them, Poser criteria utilized several laboratory and paraclinical studies to enhance the diagnostic accuracy. McDonald criteria, which are the ones used today, successfully introduced MRI findings as surrogates for the criterion of dissemination in time and space when clinical data are lacking, thus allowing earlier diagnosis of MS. [32]
The McDonald criteria states that patients with multiple sclerosis should have lesions which are disseminated in time (DIT) and disseminated in space (DIS), i.e. lesions which have appeared in different areas in the brain and at different times. [88] Below is an abbreviated outline of the 2017 McDonald Criteria for diagnosis of MS.
The criteria for an RIS diagnosis are as follows: [5] [4] [6] The presence of incidental MRI findings in the CNS white matter: Ovoid and well-circumscribed homogeneous foci, with or without involvement of the corpus callosum; T2 hyperintensities larger than 3 mm in diameter, which fulfill at least 3 of the 4 Barkhof MRI criteria [7] for DIS
It is normal to evaluate diagnostic criteria against the "time to conversion to definite". In 2001, the International Panel on the Diagnosis of multiple sclerosis issued the McDonald criteria, a revision of the previous diagnostic procedures to detect MS, known as the Poser criteria. "While maintaining the basic requirements of dissemination in ...
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Together with MRI, magnetic resonance spectroscopy allows to see the biochemical composition of the lesions, which shows at least two different patterns [201] Currently as of 2014, the MRI studies have led to the proposal of four MRI phenotypes, [202] though both the classification and the relationship with the pathology remains controversial.
U.S. Surgeon General Dr. Vivek Murthy warned in a recent advisory about alcohol use increasing cancer risk. The advisory notes that alcohol can increase the risk of throat, liver, esophageal ...