erythrophagocytosis

There is a marked erythrophagocytosis and lymphocytic infiltration of the pulp.

Hemophagocytosis (erythrophagocytosis).

The finding of erythrophagocytosis, where phagocytosed erythrocytes is observed, signifies haemorrhage into the CSF that preceded the lumbar puncture.

For the most part, the anemia seen in M. haemofelis infection is a result of extravascular erythrophagocytosis by macrophages in the spleen, liver, lungs, and bone marrow.

Therefore, when erythrocytes are detected in the CSF sample, erythrophagocytosis suggests causes other than a traumatic tap, such as intracranial haemorrhage and haemorrhagic herpetic encephalitis.