Table 1.

Pre-operative clinico-radiological factors and incidence of LPLN metastasis

Characteristics		LPLN metastasis positive (N = 9)	LPLN metastasis negative (n = 34)	p value
Age	< 50 years	5 (55.5%)	15 (44.1%)	0.11
	≥ 50 years	4 (45.5%)	19 (55.9%)
Gender	Male	3 (33.3%)	18 (52.9%)	0.004
	Female	6 (67.7%)	16 (47.1%)
Serum CEA	≤ 5 ng/mL	2 (22.2%)	13 (38.2%)	0.01
	> 5 ng/mL	7 (77.8%)	21 (61.8%)
Tumour location	R	6 (66.7%)	19 (55.9%)	0.1
	r	3 (33.3%)	15 (44.1%)
Clinical T stage (MRI)	T3	3 (33.3%)	21 (61.8%)	0.0001
	T4	6 (66.7%)	13 (38.2%)
Regional lymph nodes	N0	3 (33.3%)	19 (55.9%)	0.004
	N1	5 (55.5%)	13 (38.2%)
	N2	1 (11.2%)	2 (5.9%)
LPLN on MRI	Not enlarged	5 (55.5%)	31 (91.2%)	0.0001
	Enlarged < 8 mm short axis	4 (44.5%)	3 (8.8%)
Annularity	≤ 2/3	5 (55.5%)	13 (38.2%)	0.01
	> 2/3	4 (44.5%)	21 (61.8%)

R—tumour left below peritoneal reflation, r—tumour left above peritoneal reflection