This week’s case is an 8-year-old female neutered Labrador Retriever with a mass on the caudal mandible. Can you see all the lesions?
FindingsThe cardiovascular structures are normal in size and shape. There are two large soft-tissue nodules in the lungs and multiple smaller nodules. One of the larger nodules is located in the left caudal lung lobe, and the second is superimposed over the trachea on both projections. There is a broad-based soft-tissue opacity in the dorsal thorax, ventral to T10-11. On the ventrodorsal projection, the proximal portion of the 10th left rib is lytic, and a partial curved soft-tissue opacity is visible. Collimated views confirm the extrapleural sign and lysis of the 10th rib.
DiagnosisPulmonary and musculoskeletal metastatic disease from the oral tumor
Histopathology was inconclusive (melanoma, squamous cell carcinoma, osteosarcoma).