Table 3.

Correlation between pN category and metastatic lymph node ratio

		Metastatic lymph node ratio (%)				Total number
		0	1–39	40–79	80–100
pN category	pN0	55	0	0	0	55
	pN1	0	85	2	0	87
	pN2	0	16	30	3	49
	pN3	0	1	14	18	33
Total number		55	102	46	21	224