Worried but probably overreacting, MRI query

I would not rely on imaging for other issues to diagnose your breast problem. MRIs are typically focused on certain areas and different modes are used to image different issues. Incidental findings are possible. If you had a very obvious lesion on your vertebrae or bone marrow signal abnormalities I would most expect most radiologists to spot it and note it, but they are more likely to miss things they are not looking for and can miss very visible things in that instance.

I had a lot of imaging of my thoracic region for back issues while I had breast cancer but before I was diagnosed. Mainly X-Rays and MRIs. The X-Rays failed to spot both the breast cancer and a lung issue because they were taken from the wrong perspective or focused in the wrong plane to image those issues. The MRI, when it imaged my breasts at all, only produces faint suggestions of breasts because it was focused on my spine. In fact, in most instances the front half if my torso was not imaged at all. One doctor remarked how narrow the technician made the field of view.

After I was diagnosed, I had a breast MRI and the cancer was only apparent in certain modes.

If you are having breast issues, they need to be addressed explicitly. You should make an appointment with a dermatologist for the blisters and a breast specialist as well.

But I think Melissa makes sense. Start with primary care or your regular Gyn.