A friend needs to have an operation in the next few months. I know that generally patients are told to take off metal jewellery before an operation but he has a necklace of sorts made, I think maybe of leather, certainly not metal. This is of great sentimental value to him. He never takes it off.
So here is the question. If they say he can keep it on will he definitely be able to keep it on? Is there any possibility that during the op they might decide they need to take it off? While he doesn't want to take it off at all would it be better to take it off before the op and give it to someone for safekeeping rather than risk them taking it off and discarding it if say something went wrong and they were worried it would constrict his airways or something?