Skull base plasmacytoma: A unique case of POEMS syndrome with a plasmacytoma causing craniocervical instability

To the best of our knowledge, this is the first report of a skull-base plasmacytoma associated with POEMS-syndrome, causing cranio-cervical instability. The approach of systemic therapy combined with temporary external fixation, followed by definitive occipital cervical fusion resulted in a good outcome for this patient.