I don’t know if they can look at the chest wall but I imagine they can look at any area that the specialist requests. MRI is a much more sensitive test to cancer so is really good if they aren’t sure exactly where to biopsy. I had an MRI with contrast just prior to my most recent surgery because the surgeon wanted to make sure they could get clear margins away from the chest wall. I wish they had done MRIs earlier to get a better idea what they were dealing with but I’m guessing it’s a funding issue. I hope you get some clarity soon.