[Impact of laparoscopic colorectal surgery on the peritoneal microstructural injury and expression of t-PA/PAI-1].

Objective: To assess the influence of laparoscopic colorectal cancer resection on the peritoneal microstructure injury and expression of t-PA/PAI-1 molecules.

Methods: A total of 50 patients with colorectal cancer were prospectively enrolled between June 2011 and February 2012 in the Shanxi Provincial Hospital and were assigned into laparoscopic group (LO, n=27) and conventional laparotomy group (CO, n=23) based on patients expectancy and surgeon decision. Optical microscope and scanning electron microscope were employed for comparison of the postoperative peritoneal injury between LO and CO.

[Value of identification of cystic duct, common bile duct, and common hepatic duct in prevention of bile duct injury during laparoscopic cholecystectomy].

Objective: To explore effective method to avoid iatrogenic bile duct injury during laparoscopic cholecystectomy (LC).

Methods: 10 492 patients underwent LC from May 1996 to May 2006, 8566 of them were treated by the method to identify the cystic duct, common hepatic duct, and common bile duct during LC (tri-duct method group), and the left 1926 cases whose cystic duct failed to be exposed easily were treated with the method to identify at least two of the 4 structures (cystic lymph node, Hartmann's pouch, cystic artery, and emptiness of cystic triangle) so as to help identify the cystic duct (tri-duct plus tri-structure group). The operating time, amount of blood loss, open conversion rate, and morbidity were compared between these 2 groups.