Characteristics and Patterns of Metastatic Disease from Chordoma

Table 4

Patterns of primary metastasis.

Primary tumor site	Total ()	Metastatic ()	%	Site of primary metastasis
Clivus	4	1	25%	Soft tissue [calf]
Cervical spine	22	1	4.5%	Lung
Lumbar spine	38	7	18.4%	Sternum (2)
				Lung (3)
				Soft tissue [1: abdomen, 1: groin and psoas muscle]
Sacrum	133	23	17.3%	Lung (13)
				Liver (3)
				Bone [1: lumbar spine, 3: thoracic spine, 1: multiple bone sites] (5)
				Soft tissue (2)
Thoracic spine	16	5	31.3%	Lung (3)
				Bone [trochanter] (1)
				Soft tissue [abdominal wall] (1)
Multiple primary sites	4	1		Lung
Posterior mediastinum	1	0
Not documented	1	1		Lung
Total	219	39	17.4%