Short-term outcomes of overlapped delta-shaped anastomosis, an innovative intracorporeal anastomosis technique, in totally laparoscopic colectomy for colon cancer

Table 1 Patient demographics n (%)

Parameter
Gender
Male	6 (30)
Female	14 (70)
Age, yr, mean (range)	52.6 (38-67)
BMI, kg/m2, mean (range)	22.9 (20.2-25.5)
ASA score
1	10 (50)
2	7 (35)
3	3 (15)
Tumor site
Ascending colon	10 (50)
Transverse colon	4 (20)
Descending colon	6 (30)
Surgical procedure
Right hemicolectomy	11 (55)
Transverse hemicolectomy	2 (10)
Left hemicolectomy	7 (35)
Preoperative chemotherapy	4 (20)

BMI: Body mass index; ASA: American Society of Anesthesiologists.

Table 2 Operative outcomes and perioperative complications

Parameter
Operative outcomes
Operative time, min, mean (range)	178.5 (155-225)
Estimated blood loss, mL, mean (range)	58.5 (30-100)
Time to first flatus, d, mean (range)	2.5 (1-3)
Time to first oral intake, d, mean (range)	3.0 (2-4)
Postoperative hospitalization, d, mean (range)	6.8 (5-8)
Length of transverse incision, cm, mean (range)	4.8 (4-6)
Postoperative pain score
The first day, mean (range)	2.8 (2-4)
The second day, mean (range)	1.5 (1-3)
The third day, mean (range)	0.7 (0-1)
Perioperative complications (%)
Anastomotic leakage	0 (0)
Anastomotic stenosis	0 (0)
Anastomotic bleeding	0 (0)
Abdominal infection	1 (5)
Deep-vein thrombosis	0 (0)
Wound infection	0 (0)
Intestinal obstruction	0 (0)
Gastric paralysis syndrome	1 (5)
Reoperation (%)	0 (0)

Table 3 Pathological results

Parameter
Tumor size, cm, mean (range)	4.2 (2.8-6.3)
Proximal resection margin, cm, mean (range)	19.5 (13.8-23.5)
Distal resection margin, cm, mean (range)	17.8 (12.2-21.6)
No. of lymph nodes harvested, mean (range)	32.4 (23-45)
pTNM stage (%)
I	5 (25)
II	8 (40)
III	7 (35)

pTNM: Pathological tumor node metastasis.