What causes BPDCN?

What are some safe weight-bearing exercises that myeloma patients could try? What are some strengthening activities?
What are some trusted sources I can use to learn more about the exercise and cancer?
How do I find an oncologist trained in integrative medicine?
What are the risk factors for developing graft versus host disease in acute myeloid leukemia patients?
BETA - What is a PET/CT scan? How can a PET/CT scan help monitor myeloma?
BETA - What is the role of Magnetic Resonance Imaging (MRI) in diagnosing and monitoring myeloma and smoldering myeloma?
BETA - What is a CT scan or a whole body low dose CT (WBLD-CT) scan? When are they used in myeloma diagnosis and monitoring?
BETA - What imaging modalities are used to detect lytic and focal lesions?
BETA - How long does it take to see a response to myeloma therapy?