Prognosis evaluation in patients with hepatocellular carcinoma after hepatectomy: comparison of BCLC, TNM and Hangzhou criteria staging systems.

Purpose: This study is to evaluate the Hangzhou criteria (HC) for patients with HCC undergoing surgical resection and to identify whether this staging system is superior to other staging systems in predicting the survival of resectable HCC.

Method: 774 HCC patients underwent surgical resection between 2007 and 2009 in West China Hospital were enrolled retrospectively. Predictors of survival were identified using the Kaplan-Meier method and the Cox model.

Experimental study of the safety of pancreas cryosurgery: the comparison of 2 different techniques of cryosurgery.

Objectives: To test the feasibility of cryosurgery for pancreatic carcinoma and to observe the consequence of cryosurgery by 2 different techniques.

Methods: Twelve healthy pigs underwent laparotomy, during which, chop amputation of common bile duct and duodenum were performed, meanwhile other intra-abdominal organs with the pancreas were isolated. Two different techniques of cryosurgery were performed on the pancreas.