Laparoscopic pancreaticoduodenectomy via a reverse-''V'' approach with four ports: Initial experience and perioperative outcomes

Table 1 Patient demographics and surgical data n (%)

Characteristic	Median (range)
Patients	21
Age (yr)	66 ± 12
Body mass index	25 (17-37)
ASA score	3 (2-3)
Sex, female/male	13/8
Disease status
Benign	3 (14.3)
Malignant	18 (73)
Parenchymal background (n)
Soft	9
Intermediate	6
Solid	6
Type of procedure
Pylorus-preserving	14 (95)
Operative time (min)	316 (260-410)
Estimated blood loss (mL)	240 (30-1000)
Conversion rate	1 (4.9)
Number of lymph nodes retrieved	14 (8-26)