myeloma cell
a cell found in bone marrow and occasionally in peripheral blood of patients with multiple myeloma. In the more anaplastic forms, the cell is large, has abundant blue-staining cytoplasm with no perinuclear pallor, and has one or more moderately large and vesicular nuclei that may be centrally or eccentrically placed and may contain nucleoli. In better differentiated tumors, the cell is smaller and, except for the finer chromatic structure, greatly resembles a plasmacyte.
Medical dictionary.
2011.