True about smoldering myeloma is -
Smoldering multiple myeloma (SMM) is an early precursor to a rare blood cancer known as multiple myeloma, which affects plasma cells. This type of cancer produces ceain proteins that can be measured in both blood and urine. These proteins show up before a person has any symptoms of cancer. Ref Davidson 23rd edition pg 789
Monoclonal gammopathy
Lytic bone lesion
Hypercalcemia
Bone marrow plasma cell > 10%
Haematology