Table 1 Baseline characteristics, initial treatment details and pathological characteristics of patients with oesophagogastric adenocarcinoma who underwent surgery with curative intent

Gender

  Male

188 (88 %)

98 (67 %)

  Female

26 (12 %)

48 (33 %)

Median age (range)

64 years (33–83)

70 years (24–89)

ECOG performance status

  0

58 (27 %)

40 (27 %)

  1

69 (32 %)

41 (28 %)

  2

2 (1 %)

10 (7 %)

  Unknown

85 (40 %)

55 (38 %)

Site of primary tumour

  Oesophagus

29 (14 %)

-

  Type 1 GOJ

77 (36 %)

-

  Type 2 GOJ

63 (29 %)

-

  Type 3 GOJ

45 (21 %)

-

  Gastric

-

146 (100 %)

Elevated tumour markers pre-operatively

  Yes

61 (29 %)

27 (19 %)

  No

122 (57 %)

75 (51 %)

  Unknown

31 (14 %)

44 (30 %)

Baseline PET performed

  Yes

69 (32 %)

24 (16 %)

Treatment

  Neoadjuvant^a

125 (58 %)

30 (21 %)

  Peri-operative^b

51 (24 %)

56 (38 %)

  Adjuvant

5 (2 %)

7 (5 %)

  Surgery only

33 (15 %)

53 (36 %)

Surgery

  Oesophagogastrectomy

178 (83 %)

3 (2 %)

  Total gastrectomy

35 (16 %)

51 (35 %)

  Sub-total gastrectomy

1 (1 %)

92 (63 %)

Differentiation

  Well

8 (4 %)

4 (3 %)

  Moderate

84 (39 %)

43 (30 %)

  Poor

107 (50 %)

94 (64 %)

  Unknown

15 (7 %)

5 (3 %)

T stage

  T0

11 (5 %)

7 (5 %)

  T1

48 (22 %)

34 (23 %)

  T2

53 (25 %)

66 (45 %)

  T3

89 (42 %)

27 (19 %)

  T4

10 (5 %)

9 (6 %)

  Tx

3 (1 %)

3 (2 %)

N stage

  N0

105 (49 %)

72 (49 %)

  N1

92 (43 %)

40 (27 %)

  N2

10 (5 %)

20 (14 %)

  N3

3 (1 %)

11 (8 %)

  Nx

4 (2 %)

3 (2 %)

M stage^c

  M0

204 (95 %)

139 (95 %)

  M1

5 (2 %)

4 (3 %)

  Mx

5 (2 %)

3 (2 %)

Number of lymph nodes resected

  Median (range)

28 (4–76)

24 (3–69)

Number of positive lymph nodes

  Median (range)

1 (0–33)

1 (0–35)

Resection margin

  R0

161 (75 %)

135 (92 %)

  R1

47 (22 %)

7 (5 %)

  R2

0 (0 %)

0 (0 %)

  unknown

6 (3 %)

4 (3 %)