First of all, I'd like to just say it's great to see this community here discussing anything myeloma- and MGUS-related. My dad has had MGUS for the past 10 years almost, and it's been stressful having to sometimes deal with this and the possibility of it progressing to multiple myeloma. I've been a lurker here and there and reading these posts have provided me a great level of comfort, so thank you!
As I mentioned, my dad has had MGUS for almost 10 years, He's 63 years old. His recent blood test last month showed his plasma level is 6 g/L (0.6 g/dL) and I believe this level has been pretty stable since he was first diagnosed with this. The rest of the levels look normal, but his white blood cells count is a little low.
Recently in the past month he started having a neck pain and lip twitching sometimes. He just did a test that showed a fracture in his neck, and the radiologist said 'pathological fracture perhaps due to metastasis or bone marrow infiltration'.
Do these fractures mean that my father's MGUS has progressed to multiple myeloma, or can people have MGUS and fractures without the disease necessarily having progressed to multiple myeloma?
I'm just trying to understand if fractures can happen when you have MGUS without necessarily meaning the disease has progressed to multiple myeloma. I really hope this is nothing serious

Thanks!