Comment by preommr
6 days ago
> some of which can be harmful,
Like what?
I've seen instances where this is used as an excuse for what is, ostensibly, a trick to dimiss people using something that sounds vaguely professional. Like when doctors say they don't want to do additional x-rays because of the risk of radiation exposure, nvm that if it comes out slightly blurry they'll ask to redo it, or if you're cautious about it initially they'll tell you how it's not big deal and there's more radiation in a cluster of bananas.
Biopsies, radiation from additional scans, surgery, treatment for cancers that would not have developed further.
A lot of potential harms are at a societal level as well—from a public health perspective, if everyone starts having regular MRIs that produce incidental findings which require followup, you’re suddenly tying up lots of resources that would otherwise be available to actually-sick people. A person with symptomatic problems whose treatment is delayed because they can’t get an appointment because the specialists are booked full with incidental findings, that person is indirectly harmed by this.
The radiation from CT scans is not especially concerning at an individual level when there is a compelling reason for it, but, if we’re suddenly doing tons more to investigate incidental MRI findings, there may well be a point where those scans are causing a significant amount of cancer overall—a recent study suggested, I believe, that CT scans may be responsible for 5% of cancers already.
> Like what?
Well, from the original article: "And if someone is over-diagnosed, gets a biopsy and develops an infection, that's a direct harm."
Like when someone has an anaphylactic reaction to the contrast dye for their CT?
Contrast-induced nephropathy?
Gadolinium accumulation in the brain doesn't sound good for you...
Although I think this argument is usually talking about the risks of the resulting procedures (eg an injury or complication related to a biopsy done for a finding on imaging).
I worry particularly about damage to the kidneys, something that you mention in your comments.
It takes a lot to clear the dye.
A colonoscopy has the risk of going very wrong due to a puncture.