Mesenchymal Neoplasia In Dogs Leg Pain. The bones— bone neoplasms are common in large and “giant” breeds of dogs. Primary thoracic wall tumours of mesenchymal origin in dogs:
Affiliation 1 queen's veterinary school hospital. Neoplastic cells may be benign or malignant and require evaluation and testing for a definitive diagnosis. Lily also has a slight heart murmur.