Computed tomography and magnetic resonance imaging evaluation of lymph node metastasis in early colorectal cancer

Table 1 Demographic, imaging, and pathologic variables and lymph node metastasis

	Non-metastasis	Metastasis	P value
Sex (n)			0.547
M	80	10
F	60	10
Age (yr)	59.89 (20-85)	58.75 (38-81)	0.672
Tumor depth (n)			0.129
Mucosa	17	0
Submucosa	113	20
Tumor location (n)			0.756
Ascending	15	2
Transverse	13	2
Descending	6	2
Sigmoid	45	5
Rectum	61	9
Detectability of primary tumor site (n)
Yes	82	12	1.000
No	58	8
Detectability of regional lymph node (n)
Yes	38	15	0.0001
No	102	5
Lymph node size (mm)	4.121 (3-6.5)	5.686 (4-14)	0.0442

¹The detection rate of lymph nodes was significantly higher (P = 0.000) in the pathologic nodal metastatic group (15/20) than in the non-metastatic group (38/140);

²The mean short axis diameter of the largest regional lymph nodes was significantly higher (P = 0.044) in the nodal metastatic group (5.686 mm) than in the non-metastatic group (4.121 mm).