Hematology

Pyoderma Cytology: Neutrophil Karyolysis and Cocci

Cytological signs of skin pyoderma: karyolytic neutrophils with swollen nuclei and phagocytosed cocci in the cytoplasm during bacterial inflammation.

Cytological smear: karyolytic neutrophils with phagocytosed cocci
Cytological smear: karyolytic neutrophils with phagocytosed cocci

🔬 VETERINARY CYTOLOGY Pyoderma cytology: karyolytic neutrophils with numerous intracytoplasmic cocci.

Localization: Skin (neoplastic skin diseases).

Description: The image shows neutrophils with signs of nuclear degeneration — karyolysis. The nuclei appear swollen and hypochromatic, with a loss of the typical multi-lobed structure. A large number of bacteria (cocci) are observed in the cytoplasm of the neutrophils.

Source: Francesco Albanese - CANINE FELINE SKIN CYTOLOGY SECOND, 2025 Photo source: 🏛 Library “Veterinary Laboratory Medicine”