Recap

Red Cell Morphology

• Low power:
  • Red blood cells:
    • Rouleaux
    • Agglutination

• High Power:

• • Size:
    • Mean cell size (relative to small lymphocyte):
      • Microcytic
      • Normocytic
      • Macrocytic
    • Variation in cell size (anisocytosis)
  • Staining (color):
    • Central pallor:
      • Hypochromia
      • Normochromia
      • Hyperchromia
    • Polychromatophilia
  • Shape (poikilocytosis):
    • Normal
    • Spiculated cells:
      • Acanthocyte (spur cell)
      • Echinocyte (burr cell)
      • Teardrop cell (dacrocyte)
      • Sickle cell (drepanocyte)
      • Schistocyte:
        • Helmet cell
        • Horn cell (keratocyte)
    • Bite cell
    • Blister cell
    • Ovalocyte
    • Spherocyte
  • Inclusions:
    • Nucleated red blood cells
    • Howell-Jolly bodies
    • Basophilic stippling
    • Pappenheimer bodies
    • Parasitic inclusions
      • Malaria
      • Babesia