The annual World Congress of the International Association of Surgeons, Gastroenterologists and Oncologists (IASGO) was held in Bangkok, Thailand, from 5–9 December 2012, hosted under the auspices of the President of the Association, Masatoshi Makuuchi and the General Secretary Nicolas Lygidakis. The President of the Congress and of the local committee was Nopadol Wora-Urai from Bangkok University (Bangkok, Thailand). The organization of the congress was excellent, and both the location and the kindness of the local people were marvellous. The congress was supported by 665 participants from 62 countries, including speakers from Europe, America, Africa, Asia and Australia. The program included symposia, videos, free papers and poster sessions. The scientific sessions also provided live surgery and lunch lectures. The congress offered the opportunity to exchange knowledge about the challenges and controversies involved in the management of abdominal diseases. This paper analyzes current possibilities and future expectations for the diagnosis and treatment of liver tumors, especially hepatocellular carcinomas and liver metastases from colorectal cancer.