Sysmex Europe

CSF with RBC erythrophages and siderophages

Cytospin prepared from cerebrospinal fluid (CSF) of a patient with posterior communicating artery (PCoA) aneurysm after six weeks of the incidence. Erythrophages and siderophages with ingested red blood cells. As red blood cells degenerate further, the breakdown products are seen in the phagocytic cells as dark, granular, iron-laden haemosiderin deposits or yellow crystalline iron-free haematoidin crystals. May-Gruenwald Giemsa stain.

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