It is a VERY common error to assume that it does.  One of your references, (rarediseases.org) lists them accurately.  "In order to be diagnosed with POEMS syndrome, a person must present both polyneuropathy and monoclonal plasma cell proliferative disorder in addition to one major criterion and one minor criterion. The other major criteria for POEMS syndrome include osteosclerotic lesion, Castleman disease, and elevated levels of vascular endothelial growth factor (VEGF). Minor criteria for POEMS syndrome include enlargement of organs (organomegaly), extracellular fluid accumulation (peripheral edema, ascites, or pleural effusion), endocrinopathy, skin changes, swelling of the optic disc (papilledema) and elevated blood cell count (polycythemia or thrombocytosis)".

Admittedly, PM(osteosclerosis,CD,VEGF)oespp would not be as catchy.