Chairs: Peter Grimminger, surgeon, Mainz, Germany, Bruno Zilberstein (surgeon, Sao Paulo, Brasil), Fatima Carneiro (pathologist, Medical Faculty of Porto and Hospital Sao Joao, Porto, Portugal) and Ken Namikawa (gastroenterologist, Cancer Institute Hospital, Tokyo, Japan), Toshiaki Hirasawa (Gastroenterologist, Cancer Institute Hospital, Japanese Foundation Of Cancer Research, Japan)