So I've heard several times that diagnostic radiologists have a very broad knowledge base and know "everything about everything." But does that only pertain to diagnostic knowledge? What about treatment? What about pathologies that you can't see on imaging studies? The reason I ask is because I don't want to be one of those doctors that can't help anyone with their medical problems that I don't see in practice. If a friend asks me "I've got such and such problem, what do i do?" I don't want to reply with "Oh, I'm sorry, I'm not that kind of a doctor." Anyone else have the same concerns?