After the two consensus meetings on laparoscopic liver resection in Louisville (2008) and in Morioka (2014) minimally invasive approach for liver resection was finally widely established in liver surgery practice. Successively more countries follow laparoscopic liver pioneers and apply laparoscopic liver surgery for everyday practice.

Primary aim of the study is to assess the evolution and diffusion of minimally invasive liver surgery in Poland. Secondly, it will allow to assess the actual short- and long-term results of laparoscopic liver resections and compare it to the international benchmark values.

The National Polish Registry of Minimally Invasive Liver Surgery will include data about all cases of laparoscopic liver resections performed in Poland since the first case in 2010. All surgical departments, where laparoscopic liverresection is regularly performed, will be invited. Data of demography, previous medical history, preoperative assessment, intraoperative and postoperative period, histopathological findings and long-term follow-up will be included in the registry.

This study will be the first national report about diffusion of minimally invasive surgery in Poland.

Inclusion Criteria:

• age >18 years
• underwent laparoscopic liver resection

Patients who underwent laparoscopic liver resection in Poland