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Question:
Hi my question is regarding MRI reports. I have seen the term "volume loss in the brain" multiple times when obtaining a copy of the MRI report, but my doctor has never mentioned this as an issue to me. Should I be concerned? Answer: The term, “volume loss”, on an MRI report is usually accompanied by the phrase, “greater than expected for age.” As you may know, we gradually lose brain tissue volume as part of the normal aging process. Certain diseases of the nervous system, such as MS, accelerate this volume loss. Even in the most benign cases of MS, we usually notice greater volume loss than expected for age after years of disease. Few neurologists pay attention to this volume loss for several reasons: 1. Until recently there was no way to accurately measure this brain volume loss except in research studies or even determine if the amount of volume loss per interval of time (say a year) was greater than expected. Soon these techniques will be available in clinical practice. 2. We know of no therapies that halt this volume loss, although certain highly active therapies such as alemtuzumab (Lemtrada) and ocrelizumab (not available yet) slow down this loss of volume to near normal rates. 3. Most MS therapies are approved based on clinical trials that used relapse rates and the development of new T2 hyperintensities (the white spots on MRI) as the chief outcome measures. Therefore, most neurologists in clinical practice primarily use these outcome measures to determine if a drug is working. Studies over the past 25 years have demonstrated that the brain is able to compensate for loss of brain tissue, in individuals with significant passive and active neuronal reserve (see prior blogs on this subject). Briefly, passive reserve refers to the amount of enrichment and education you receive during development and active reserve refers to ongoing mental and physical stimulation and learning through adulthood and old age. Therefore, the mere presence of volume loss should not concern you now. Continued volume loss, on the other hand, at rates greater than expected is associated with the development of both cognitive and physical disability. Therefore, it is increasingly important to measure this MRI metric to determine if your treatment is working adequately. This is particularly important in people who are over 50 or with longstanding MS, since they rarely have relapses or noticeable new MRI T2 lesions even when a treatment is not working adequately. In these individuals it is perhaps not accurate to say that everything is stable merely because these measure remain stable. Stay tuned for more information on this important topic. Revere (Rip) Kinkel MD Director of the Multiple Sclerosis Program Professor of Clinical Neurosciences University of California San Diego
Deborah Tefertiller
5/22/2018 09:39:40 pm
I have significant volume loss, am 57 and just diagnosed, with several brain lesions, 2-3 black holes and 2 spinal cord lesions. The only clinical episode I can recall was my CIS in 2012 in which one side of my mouth wouldn't smile and I had 24 hours of double vision in one eye. My Primary Care Dr diagnosed atypical Bell's Palsy after my Brain MRI showed significant volume loss and white matter ischemia as well as a small old stroke which I had been unaware of. My "Bells Palsy was treated with steroids and antivirals and resolved in 4-5 days.My MS was only diagnosed this year when lesions were found in my cervical spine when an MRI was done prior to epidural steroid injection for degenerative disc disease and scoliosis pain. The spinal lesions were followed up with a Brain MRI and I was appalled at all the damage there. I have had no relapses but my Neurologist diagnosed me with Relapsing/Remitting MS and I dont understand as I have had no relapses that I know of. Can you help me make sense of this? Comments are closed.
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