A 37-year-old woman undergoes MRI for suspected MS and is found to have multiple brain T2 lesions, but only 1 lesion shows gadolinium enhancement. Spine MRI is normal. She reports mild cognitive difficulties but no recent relapses. Which of the following supports a diagnosis of MS over other demyelinating conditions?
- A)Cognitive symptoms are pathognomonic for MS
- B)The presence of gadolinium enhancement indicates acute demyelination specific to MS
- C)Evidence of dissemination in space with both enhancing and non-enhancing lesions of different agesGABARITO
- D)Normal spine MRI confirms that this is MS rather than myelitis-associated disease
- E)Absence of spinal cord involvement excludes other demyelinating diseases
Explicação
MS diagnostic criteria emphasize dissemination in space (lesions in different CNS regions) and time (lesions of different ages/enhancement patterns). The combination of multiple T2 lesions with only some enhancing gadolinium indicates lesions of different ages... Ver explicação completa e trilha adaptativa →