The value of diffusion kurtosis imaging and intravoxel incoherent motion quantitative parameters in predicting synchronous distant metastasis of rectal cancer

Table 2 Demographic and clinical characteristics of the 167 patients with rectal cancer

Characteristics	non-SDM (n = 134)	SDM (n = 35)	P
Age(year)	63 ± 14	59.49 ± 11.69	0.391
Sex
Female	53	11	0.378
Male	81	24
CEA(ng/ml)
< 10	105	19	0.005
≥ 10	29	16
CA19-9(U/m)
< 30	107	21	0.02
≥ 30	27	14
Tumor location			0.012
1 (high)	42	15
2(middle)	74	10
3 (low)	18	10
1vs.2			0.028
1vs.3			0.371
2vs.3			0.004
Tumor length	45.5 ± 22	52 ± 29	0.174
mrT
T1-2	39	6	0.154
T3-4	95	29
mrN
N0	36	8	0.630
N1 + 2	98	27
mrCRM
+	104	19	0.006
-	30	16
mrEMVI
+	105	20	0.011
-	29	15
Center
1	74	15	0.192
2	60	20
Machine
1	70	15	0.323
2	64	20

SDM Synchronous distant metastasis, CEA Carcinoembryonic antigen, CA19-9 Carbohydrate antigen 19–9, mrT T Stage on MRI, mrN N stage on MRI, mrCRM Circumferential resection margin on MRI, mrEMVI Extramural vascular invasion on MRI
Tumor location: high = 1, middle = 2, low = 3

ISSN: 1471-2407