Hepatic grooves: An observational study at laparoscopic surgery

Table 1 Distribution of operations

Operations	n
Cholecystectomy	259
Liver resection	15
Pancreaticoduodenectomy	3
Gastrectomy	4
Distal pancreatectomy	14
Colectomy	59
Adrenalectomy	2
Small bowel resection	8
Adhesiolysis	12
Ventral hernia repair	18

Table 2 Relationship of potential compression in surface depressions

Parameter	Conventional surface anatomy (343)	Surface depressions (51)	P value
Rib protrusion	25	3	0.7153
No rib protrusion	318	48
Diaphragmatic bands	153	40	< 0.0001
No bands	190	11
Male (n = 264)	233	30 (11.5%)	0.1977
Female (n = 131)	110	21 (16%)