Image Quiz: The outcome of a food fight

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Image Quiz: The outcome of a food fight

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Jul 30, 2012

A 9-year-old male rottweiler was presented for evaluation of a large soft mass over the masseter muscle area. The owner reported that the mass developed a few days after this dog got into a serious fight with another dog over some food. Squash preparations were made of some aspirated material. These smears were air-dried and stained with Giemsa. Representative fields are shown at 100X.



What’s the most likely diagnosis in this case?

a) Mycotic infection—suspect Aspergillus species infection

b) Bacterial infection—suspect Streptococcus species infection

c) Mesenchymal tumor—suspect hemangiosarcoma

d) Mixed inflammation—suspect a foreign body reaction

e) Infection with filamentous rods—suspect Actinomyces species infection

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