Image Quiz: The outcome of a food fight
Look at the cytologic slides and discern the cause of a rottweiler's masseter muscle mass.
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
