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Children at risk of MS often go undetected in early stages
March 20, 2023
A new study finds detection tools used for at-risk adults fail to predict the multiple sclerosis in young patients. The oversight could delay treatment of the disease at its earliest stages, according to the study’s authors.
Magnetic resonance imaging is the primary tool used for diagnosis of MS, and doctors have applied various standards over the years to classify those most likely to develop the disease. The most recent standard, known as the McDonald criteria, was last updated in 2017. In some cases, imaging suspicious for MS is found incidentally before the disease manifests, a condition known as radiologically isolated syndrome. But after reviewing the MRIs of children with RIS, researchers determined these criteria are likely insufficient for pediatric patients.
When the myelin sheath is damaged, nerve impulses slow or even stop, causing neurological issues. This damage appears as lesions – white or gray spots – on an MRI. There are many reasons for abnormal MRI findings; most don’t represent demyelination. While not all patients with MRI findings typical of demyelination go on to develop MS, a substantial number do.
To determine if children with abnormal MRI findings would develop symptoms linked to MS, and to understand how diagnostic tools used for adults apply to children, researchers at the Rutgers Robert Wood Johnson Medical School examined MRIs of children suspected of having demyelination.
Study participants were identified through the U.S. Network of Pediatric Multiple Sclerosis Centers and Rutgers Robert Wood Johnson Medical School databases. Patients were between 8 years and 18 years of age, and each had MRI findings that showed demyelination. None of the children in the study had physical or neurological symptoms common to MS – such as blurred or loss of vision, vertigo, or numbness or weakness in one or both legs – at the time of their initial MRI. While the database didn’t record why participants had been tested, the study’s authors said headaches were the most common reason.
After initial review of MRI data, patient data was assessed over a mean duration of 3.7 years to measure development of a first MS attack or new lesions. Of the 38 patients included in the study, 14 of 35 (40 percent) experienced a new clinical attack and 27 of 37 (73 percent) exhibited new MRI lesions during the review period.
When the researchers applied current MS diagnostic measures to the cohort, they found that many patients still developed MS even though they failed to meet either the McDonald or Barkhof criteria.
The study was published in the journal
Multiple Sclerosis and Related Disorders
.
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