Today’s case is a 10-year-old female neutered Golden Retriever. Presented for persistent weight loss and disinterest in food.
A large, rounded, soft tissue mass is present in the ventral aspect of the right middle lung lobe. The aortic arch is prominent and a rounded, soft tissue bulge is present in the left fifth intercostal space in the region of the main pulmonary artery. There is periarticular remodeling of both shoulder joints and mineralization of the left bicipital annular ligament.
- histiocytic sarcoma
- primary pulmonary neoplasia
- histiocytic sarcoma (obtained from fine needle aspirate of cutaneous masses)
- multiple mesenteric masses and enlarged lymph nodes were identified on abdominal ultrasound
Histiocytic sarcoma has a prediliction for the right middle lung lobe, and is usually airway associated.