Question of the Day

This is eosinophilia – most often seen with allergic disorders or parasitism. To identify eosinophils look for granulocytes with a pink cytoplasm.

Here is more information from Cornell’s Eclinpath website on eosinophils.

Also think of hypoadrenocorticism causing eosinophilia in contrast to a stress leukogram, which is characterized by eosinopenia, along with mature neutrophilia, lymphopenia, and monocytosis.

A stress leukogram is a common pattern seen in dogs (and cats) with any type of disease. Elevated blood cortisol causes the classic leukogram changes.

Monocytosis is associated with a stress leukogram, inflammation, or chronic infection. Monocytes become macrophages when they enter tissues or fluids.

Image courtesy of Ed Uthman.