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kstrauser 3 hours ago

I went to a doctor for something unrelated and ended up getting an MRI that happened to show my upper spine. The neurologist read it and determined that I have a Chiari I malformation[0]. I have no symptoms from this whatsoever. I never have. It's unlikely that I ever will. If it weren't for the MRI, I'd never have known.

Doctors use to think that the degree of it that I have meant I'd have problems with it. After all, people who came in with the symptoms and then had an MRI or CT scan tended to show that level of herniation. Thus, it was assumed, that level of herniation was considered a diagnostic indicator. And then MRIs became cheaper and more accessible, and patients had them for all sorts of other reasons — like I did. Doctors discovered that the degree of "malformation" I have is very common among asymptomatic adults. In fact, you're many times more likely to be perfect fine with it than to experience symptoms.

Well, huh. That doesn't sound like much of a malformation anymore. Or at least, by itself it doesn't mean anything, other than that perhaps you're more likely to have problems than otherwise. On its own? It's more of a normal variation.

[0] https://en.wikipedia.org/wiki/Chiari_malformation