Simultaneous Integrated Boost Volumetric Modulated Arc Therapy for Rectal Cancer: Long-Term Results after Protocol-Based Treatment

Table 1

Baseline patient and tumor characteristics.

Characteristics		(%)
Age
Mean ± SD	64 ± 15.4
Gender
	Male	15 (68.2)
	Female	7 (31.8)
ECOG PS
	0	16 (72.7)
	1	5 (22.7)
	2	1 (4.5)
cT-stage
	cT2	1 (4.5)
	cT3	17 (77.3)
	cT4a	1 (4.5)
	cT4b	3 (13.6)
cN-stage
	cN0	4 (18.2)
	cN1	11 (50)
	cN2	7 (31.8)
CEA level
Mean ± SD	15.7 ± 53.4
	≤7	17 (77.3)
	>7	5 (22.7)
Tumor location (anal verge, cm)
Mean ± SD	4.8 ± 2.4
	≤3	6 (27.3)
	>3	16 (72.7)

ECOG PS: Eastern Cooperative Oncology Group performance status; CEA: carcinoembryonic antigen.