Eosinophilic infiltration refers to the accumulation of eosinophils, a type of white blood cell, in tissues. These cells are part of the immune system and are primarily involved in responses to parasitic infections, allergic reactions, and chronic inflammatory conditions. Histologically, eosinophils can be identified by their distinctive bilobed nuclei and the presence of large, eosin-staining (pink) granules within their cytoplasm.
