Can visceral fat parameters based on computed tomography be used to predict occult peritoneal metastasis in gastric cancer?

Table 3 Comparison of attenuations of visceral fat between different clinical characteristic classifications

Variable		Mean attenuation of VF ROI 2	P value
Sex	Male	-84.90 ± 6.19	0.306
	Female	-83.83 ± 4.88
Age (yr)	≤ 61	-84.48 ± 5.11	0.937
	> 61	-84.46 ± 5.14
Pathological type	Adenocarcinoma	-84.64 ± 5.81	0.339
	Non-adenocarcinoma	-82.49 ± 4.99
Differentiation	Poorly differentiated	-84.18 ± 5.91	0.377
	Moderately and well differentiated	-85.11 ± 5.56
CEA	Normal	-84.64 ± 5.92	0.583
	Elevated	-83.81 ± 4.86
CA199	Normal	-85.04 ± 6.04	0.0021
	Elevated	-82.07 ± 3.40
CA125	Normal	-84.80 ± 5.81	0.0391
	Elevated	-80.46 ± 3.41
Location	Cardia/Body/Antrum	-84.93 ± 5.86	0.0491
	≥ 2 parts	-82.05 ± 4.67
Mild ascites	(-)	-85.41 ± 5.79	0.0011
	(+)	-81.52 ± 4.69
cN stage	N0	-85.48 (-89.85, -82.95)	0.0301
	N1-2	-83.08 (-86.68, -79.43)
	N3-4	-84.54 (-87.51, -80.60)
cT stage	≤ T3	-85.88 ± 5.83	0.0031
	≥ T4	-82.84 ± 5.29
Thickness (mm)	≤ 14.5	-84.82 ± 6.36	0.517
	> 14.5	-84.15 ± 4.98

¹P < 0.05.

CEA: Carcinoembryonic antigen; CA199: Carbohydrate antigen 199; CA125: Carbohydrate antigen 199; VF: Visceral fat; ROI 2: Regions of interest starting at the largest axial level of the tumor and extending down 25 mm.