Torocytes

Torocytes 2 (Canine2) ARROWS
Torocytes (arrows). Monocyte (arrowhead) partially visible at bottom. Canine.

Morphology: red blood cells with increased central pallor and a normal thick rim of hemoglobin creating a “punched out” appearance.

Look alikes: codocytes (bullseye), hypochromasia (increased central pallor with thin rim of hemoglobin)

Clinical relevance: artifact with no clinical significance.

Torocytes 1 (Canine 1 - DIC) ARROWS
Torocyte (arrow) beside codocyte (arrowhead). Canine (DIC, regenerative anemia).
Hypochromasia 5 (Canine 5 - Iron Deficiency) ARROWS
Numerous hypochromic red blood cells (examples marked with arrows) showing increased central pallor with a thin rim of hemoglobin. Torocytes (examples marked with arrowheads) show increased central pallor with a thick rim of hemoglobin creating a “punched out” appearance. Normal red blood cells (stars) marked for comparison. Canine (iron deficiency).

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