Does perioperative prostaglandin E1 affect survival of patients with esophageal cancer?

Table 2 Cancer variables

	PGE1 group(n = 15)	Control group (n = 15)	P value
Length of tumor (cm)1	11.9 ± 3	12.3 ± 3	0.83
Grade of histological differentiation2
Good	3 (20)	4 (26.7)	0.78
Intermediate	9 (60)	8 (53.3)
Poor	2 (13.3)	3 (20)
Undifferentiated	1 (6.7)	0 (0)
Disease stage2
IIA	8 (53.3)	10 (66.7)	0.72
IIB	2 (13.3)	1 (6.7)
III	5 (33.3 )	4 (26.7)
Number of lymph nodes in resected mass2
0	5 (33.3)	4 (26.7)	0.79
1-3	7 (46.7)	9 (60)
≥ 4	3 (20)	2 (13.3)
Pathological T12	2 (13.3)	2 (13.3)	0.75
Pathological T2	1 (6.7)	3 (20)
Pathological T3	12 (80)	10 (66.7)
Pathological N12	5 (33.3)	6 (40)	0.99

¹mean ± SD, Student’s t-test;

²Frequency (percent), χ² test or Fisher’s exact test. PGE1: Prostaglandin E1.