Table 5. Correlation between lymph node metastasis and imunohistochemistry for maspin protein in 65 patients without distant metastasis.

Tumour	Number of patients	Incidence of maspin-positive cells
		0	1	2	3
Node-negative	41	6	4	15	16	P=0.0133a
Node-positive	24	1	2	2	19

^aχ² test.