I was nodding my head whilst reading your post, @EAA - my own lobular was totally missed by mammogram 4 months prior to the tumour discovery by my GP. My mammogram was recently re-investigated by BSNSW BreastScreen NSW) and they told me that their 'new' investigation also showed I didn't have breast cancer (a real surprise to my surgeon & the pathology team, I can tell you!)
Personally, I would think that MRI/other scans should be automatic from early on - as a full detection tool/comparison tool for later on. It is ridiculous that they should be 'guessing' at what is happening now ...... when they can already know, quite easily!
Like you, I am not happy to sit here & wait for something to happen 'badly' further down the track - I would rather proactive monitoring, to catch it early, cos let's face it - we all have a damocles sword hanging over our heads as it is!!
Do you come from a medical background yourself @EAA? Your comments are very well put together & have an air of 'assurance' about them!! ;)
take care xx