Table 2.

Order of metastatic events for 20 dogs that developed CSM from an appendicular osteosarcoma

Chronological order of metastatic sites	Number (%) of dogs
Lung/CSM	6 (30)
Lung → CSM	6 (30)
Lung → CSM/bone	1 (5)
CSM → lung	4 (20)
CSM only	3 (15)

An arrow was used to indicate metastatic sites which developed 1 after another, while a slash represents metastatic sites detected simultaneously. Only metastatic events detected while dogs were alive are represented.

Abbreviation: CSM, cutaneous or subcutaneous metastases.