Development and External Validation of Web-Based Models to Predict the Prognosis of Remnant Gastric Cancer after Surgery: A Multicenter Study
Table 1
Clinicopathologic description of all remnant gastric cancer patients.
Variable
No. of Patients
%
Age (years) (Mean ± SD)
63.8 ± 9.6
>65
147
58.1
≤65
106
41.9
Sex
Male
223
88.1
Female
30
11.9
Family history
No
238
94.1
Yes
15
5.9
Interval (year)
≤5
53
20.9
5-10
28
11.1
>10
172
68.0
Previous disease
Benign
165
65.2
Malignant
88
34.8
Previous operation type
Distal gastrectomy
244
96.4
Proximal gastrectomy
9
3.6
Reconstruction
Billroth I
71
28.1
Billroth II
168
66.4
Roux-en-Y
5
2.0
Esophageal gastric remnant anastomosis
9
3.6
Comorbidity
No
155
61.3
Yes
98
38.7
ASA score
I-II
215
85.0
III-IV
38
15.0
Tumor location
Anastomosis
144
56.9
Nonanastomotic site
109
43.1
Approach
Open
174
68.8
Laparoscopic
79
31.2
Combined resection
No
207
81.8
Yes
46
18.2
Lymphvascular invasion
No
159
62.8
Yes
94
37.2
Histology
Differentiated
110
43.5
Undifferentiated
143
56.5
Macroscopic type
EGC
34
13.4
AGC, Borrmann 1-3
193
76.3
AGC, Borrmann 4
26
10.3
Size (cm) (Mean ± SD)
4.5 ± 2.1
≤2
44
17.4
2-5
128
50.6
>5
81
32.0
pT-stage
T1
34
13.4
T2
30
11.9
T3
55
21.7
T4a
91
36.0
T4b
43
17.0
pN-stage
N0
110
43.5
N1
45
17.8
N2
49
19.4
N3a
41
16.2
N3b
8
3.2
Positive LN count (Mean ± SD)
3.4 ± 5.3
Retrieved LN count (Mean ± SD)
16.1 ± 9.6
≤ 15
137
54.2
>15
116
45.8
LNR
0
110
43.5
>0,0.3
69
27.3
>0.3,0.6
42
16.6
>0.6
32
12.6
AJCC7th staging
Ia
31
12.3
Ib
20
7.9
IIa
23
9.1
IIb
48
19.0
IIIa
35
13.8
IIIb
53
20.9
IIIc
43
17.0
AJCC8th staging
Ia
31
12.3
Ib
20
7.9
IIa
23
9.1
IIb
48
19.0
IIIa
68
26.9
IIIb
44
17.4
IIIc
19
7.5
Complication
No
148
58.5
Yes
105
41.5
Adjuvant Chemotherapy
No
108
42.7
Yes
145
57.3
Radiotherapy
No
250
98.8
Yes
3
1.2
Abbreviations. SD: standard deviation; ASA: American Society of Anesthesiologists; LN: lymph node; EGC: early gastric cancer; AGC: advanced gastric cancer; Family history: family history of gastric cancer; Interval: interval between gastrectomy and remnant gastric cancer.
