Table II.

Association between PDGF-C and PDGF-D expression, primary tumor and metastatic lymph nodes.

	Metastatic lymph nodes
Primary tumor	Low	High	P-value
PDGF-C			0.88
Low	6	24
High	11	48
PDGF-D			0.92
Low	2	12
High	10	65

PDGF, platelet-derived growth factor.