There can be some ambiguity when using the word.<unk> " is sometimes equated with "plasma cell dyscrasia" or "solitary myeloma". It is often used as part of the phrase "solitary<unk> ". or as part of the phrase "extramedullary<unk> ". In this context, "extramedullary" means outside of the bone marrow.
Plasmacytoma
Astrocytoma
Oligoastrocytoma
Retinoblastoma
Histiocytoma
Osteoblastoma
Pineocytoma
Ameloblastoma