TABLE 1.

Characteristics of the study patients

	55 cases
Median age, y (range)	71 (39–91)
Gender, male/female	31/24
Median body mass index (range)	23.1 (14.0–34.2)
History of abdominal surgery, +/−	15/40
Operation type, A/B	15/40
ASA, I/II/III	15/36/4
Tumor location, V/C/A/T/S/R	2/11/12/2/15/13
cT stage, cTis/1/2/3/4	2/8/10/30/5
cN stage, cN0/1/2/3	40/11/2/2
cStage, 0/I/II/III	2/17/21/15

Abbreviation: ASA, American Society of Anesthesiologists classification.