Photomicrographs of an aspirate from a mid-abdominal mass in a dog
A 5 year old female spayed mixed breed dog presented to the referring veterinarian with a recent onset of inappetence and vomiting. Tthe abdomen was tense and mildly painful on palpation and a large firm mid-abdominal mass was identified. Abdominal ultrasound revealed the mass to be 10 cm in diameter and cavitated. The origin of the mass could not be definitively determined, although it did appear to be associated with the intestine. Ultrasound-guided fine needle aspirates from multiple areas of the mass were obtained and submitted for cytological evaluation. As you examine the photomicrographs, please consider the following questions:
- How would you characterize the inflammatory response?
- Can you identify a cause for the inflammation?
- What are possible explanations for the population of spindle-shaped cells?
Answer on next page