Impact of the Siewert Classification on the Outcome of Patients Treated by Preoperative Chemoradiotherapy for a Nonmetastatic Adenocarcinoma of the Oesophagogastric Junction

Table 2

Correlation between patients characteristics and Siewert classification.

	Siewert; 1	Siewert; 2 + 3	(spearman correlation)
Cancer center, (%)
1	1 (16.7)	5 (83.3)	0.9
2	13 (24.1)	41 (75.9)
3	0 (0)	1 (100)
4	1 (25)	3 (75)
Karnofsky index, (%)
80–100	13 (25)	39 (75)	0.5
<80	1 (14.3)	6 (85.7)
Sex, (%)
Women	0	6 (100)	0.2
Men	15 (25.4)	44 (74.6)
Age, (%)
≤62 years	6 (17.6)	28 (82.4)	0.2
>62 years	9 (29)	22 (71)
Histologic differentiation, (%)
Well differentiated	3 (30)	7 (70)	0.3
Intermediate	4 (44.4)	5 (55.6)
Undifferentiated	3 (17.6)	14 (82.4)
UST, (%)
UST 1-2	4 (57.1)	3 (42.9)	0.06
UST 3-4	11 (19.3)	46 (80.7)
USN, (%)
USN 0	1 (11.1)	8 (88.9)	0.3
USN 1	14 (25.5)	41 (74.5)
Tumoral length, (%)
<50 mm	8 (32)	17 (68)	0.3
≥50 mm	7 (23.3)	23 (76.7)
ypT, (%)
pT 0–2	12 (30)	28 (70)	0.2
pT 3-4	3 (16.7)	15 (83.3)
ypN, (%)
pN0	11 (34.4)	21 (65.6)	0.07
pN ≥ 1	4 (14.3)	24 (85.7)