Outcomes of neoadjuvant chemoradiotherapy followed by radical resection for T4 colorectal cancer

Table 4 Comparison of clinical staging with pathologic T and N staging (n = 86)¹

Clinical staging	Pathologic T staging						ypN negative	ypN positive	Total
	ypT0	ypT1	ypT2	ypT3	ypT4a	ypT4b
cT4a	7 (8.1)	3 (3.5)	5 (5.8)	24 (27.9)	3 (3.5)	2 (2.3)			44 (51.2)
cT4b	6 (7)	0 (0)	7 (8.1)	22 (25.6)	4 (4.6)	3 (3.5)			42 (48.8)
cN negative							6 (7)	1 (1.1)	7 (8.1)
cN positive							66 (76.8)	13 (15.1)	79 (91.9)
Total	13 (15.1)	3 (3.5)	12 (13.9)	46 (53.5)	7 (8.1)	5 (5.8)	72 (83.8)	14 (16.2)	86 (100)

c: Clinical (in this case evaluated by imaging); ypT: Pathologic T-stage posttreatment; ypN: Pathologic N-stage posttreatment.

¹Two patients (T4bN2M0 and T4aN2M0) did not undergo surgical resection.