A Nomogram Based on Clinicopathologic Features and Preoperative Hematology Parameters to Predict Occult Peritoneal Metastasis of Gastric Cancer: A Single-Center Retrospective Study
Table 1
Demographic and clinicopathological characteristics of patients.
Various
Training group
Validation group
OPM (+)
OPM (-)
value
OPM (+)
OPM (-)
value
Gender, no. (%)
0.555
0.135
Female
21 (28.8)
146 (32.2)
9 (56.3)
48 (36.9)
Male
52 (71.2)
307 (67.8)
7 (43.8)
82 (63.1)
Age, no. (%)
0.900
0.512
<60
36 (49.3)
227 (50.1)
7 (43.8)
61 (46.9)
≥60
37 (50.7)
226 (49.9)
9 (56.3)
69 (53.1)
Location, no. (%)
0.209
0.430
Lower third
36 (49.3)
259 (57.2)
11 (68.8)
74 (56.9)
Upper/middle third
37 (50.7)
194 (42.8)
5 (31.3)
56 (43.1)
Size, no. (%)
<0.001
0.003
<5 cm
20 (27.4)
311 (68.7)
5 (31.3)
93 (71.5)
≥5 cm
53 (72.6)
142 (31.3)
11 (68.8)
37 (28.5)
Pathological type, no. (%)
0.971
0.622
Adenocarcinoma
62 (84.9)
384 (84.8)
14 (87.5)
120 (92.3)
Nonadenocarcinoma
11 (15.1)
69 (15.2)
2 (12.5)
10 (7.7)
Differentiated degree, no. (%)
<0.001
0.102
High/middle
9 (12.3)
203 (44.8)
5 (31.3)
67 (51.5)
Poorly
64 (87.7)
250 (55.2)
11 (68.8)
63 (48.5)
Depth of invasion, no. (%)
<0.001
<0.001
Nonserosal invasion
13 (17.8)
305 (67.3)
3 (18.8)
85 (65.4)
Serosal invasion
60 (82.2)
148 (32.7)
13 (81.3)
45 (34.6)
OPM (+): with occult peritoneal metastasis. OPM (-): without occult peritoneal metastasis. Gastric signet ring cell carcinoma or mucinous adenocarcinoma was defined as nonadenocarcinoma. cT4 was defined as serosal invasion, and cT1, cT2, and cT3 were defined as nonserosal invasion.
