Fig. 3
From: Nerve pathologic features differentiate POEMS syndrome from CIDP
Semithin epoxy transverse section stained with methylene blue from POEMS (a and b) and CIDP (c and d) biopsies. The biopsies show decreased density of myelinated fibers, active axonal degeneration and lack of onion-bulbs in the POEMS (a and b) and multiple large onion-bulbs, decreased number of large myelinated fibers and regenerating clusters present in the CIDP biopsies (c and d)