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Hematopathology — Image #25 — Auer Rods

Auer Rods


Atypical linear condensations of cytoplasmic granules, Auer rods are seen in myeloid blasts and indicate a modicum of differentiation. Never seen in normal myeloid precursors, or in acute lymphoblastic leukemia, Auer rods are virtually diagnostic of AML. A myeloperoxidase stain can highlight Auer rods, as seen here.

 

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