Postoperative complications of kidney tumor surgery are still mainly bleeding, infection, and damage to surrounding tissues and organs, which are related to the way of surgery. With current open surgery, the surrounding duodenum, pancreas or other intestines may be damaged. In the case of trans-laparoscopic surgery, there may be complications specific to laparoscopy, such as bleeding from the puncture channel, or damage to the instruments, injury to the bowel or damage to large blood vessels. However, with improved technology, serious complications are now rare.