Anatomical basis for the choice of laparoscopic surgery for low rectal cancer through the pelvic imaging data—a cohort study

Table 1 Clinical and tumor characteristics of the patients

	Operation methods		P
	Anal reservation(48)	Non-anal reservation(19)	P
Age	62.38	57.84	0.230
BMI	23.36	22.65	0.359
Gender
Male (43)	33	10	0.215
Female (24)	15	9	0.215
Anal distance(cm)	5.286	2.587	0.000
Complication
With (24)	15	6	0.979
Without(46)	33	13	0.979
Tumor staging
T1 (3)	3	0	0.128
T2 (25)	15	10
T3 (39)	30	9
Transverse diameter of tumor (cm)	3.417	3.425	0.651
Tumor location
Front wall (5)	2	3	0.386
Left wall (32)	26	6
Right wall (30)	20	10

Anal distance, the distance from the lower edge of the tumor to the anus was measured along the central axis of the pelvic MRI. Transverse diameter of tumor, the maximum width of coronal plane was measured by MRI

ISSN: 1477-7819