Plasma cell

The plasma cell is white blood cell that produces antibodies.

Microscopic

Features:

• Ovoid intermediate-small cell size ~ 12 micrometers:
  • Cells slightly larger than red blood cells and neurophils.
• Eccentric nucleus.
  • Nucleus usu. hugs the cell membrane.
  • "Clock-face" chromatin pattern.
    • Small dots symmetrically rim the nuclear membrane - like the numbers on a clock.
• Abundant cytoplasm.
  • Nucleus-to-cytoplasm ratio ~1:2
  • Perinuclear hof (prominent Gogli apparatus).
    • Pale perinuclear crescentic - may be up to the size of the nucleus in active plasma cells.

Images:

• Plasma cells (WC).

Neoplasia

Main article: Plasma cell neoplasms

Neoplasms derived from plasma cell are called plasma cell neoplasms.

IHC

• CD38 +ve.
• CD138 +ve.

Others:

• CD19 -ve.
• CD20 -ve
• CD56 -ve.

See also

• Red blood cell.