Dear Colleagues and Friends,
On behalf of the Organizing Committee, it is my great honour and pleasure to invite you to the XI International Onco Surgery Days: Colorectal Cancer Liver Metastases – An International Multidisciplinary Single-Topic Congress, which will take place in Istanbul, Türkiye, on 22–23 January 2027.
The congress is being organized as an official scientific meeting of the Türkiye Chapter of the International Association of Surgeons, Gastroenterologists and Oncologists (IASGO). The scientific programme will also feature dedicated sessions organized in collaboration with the Society for Surgery of the Alimentary Tract (SSAT) and the European Federation–International Society for Digestive Surgery (EFISDS). These important collaborations will further strengthen the international and multidisciplinary character of the congress and promote scientific exchange among all specialists involved in the management of colorectal cancer liver metastases.
In addition to the main congress, a two-day pre-congress educational programme will be held on 20–21 January 2027. Both days will focus on liver surgery, intraoperative ultrasonography (IOUS), and SYNAPSE 3D–based hepatopancreatobiliary imaging and surgical planning. On the first day, these techniques will be demonstrated and discussed in a live surgical setting at Cerrahpaşa Faculty of Medicine. On the second day, participants will consolidate their knowledge through hands-on laparoscopic and open liver surgery training, practical IOUS applications using porcine models, and interactive SYNAPSE 3D training at the Medtronic Innovation Center in Ümraniye.
The management of colorectal liver metastases has evolved into a complex and rapidly developing field that requires close collaboration among surgeons, medical oncologists, radiation oncologists, radiologists, interventional radiologists, pathologists, nuclear medicine specialists, and basic scientists. Advances in tumour biology, systemic therapies, imaging, surgical techniques, ablation, and liver transplantation continue to expand treatment possibilities and challenge conventional definitions of resectability.
The XI International Onco Surgery Days will provide a comprehensive platform for discussing the entire multidisciplinary treatment pathway. The scientific programme will address patient selection and treatment sequencing; parenchyma-sparing liver surgery and R1 vascular resection; disappearing liver metastases; minimally invasive and image-guided surgery; intraoperative ultrasonography and surgical navigation; ablation and combined liver-directed treatments; liver transplantation for selected patients; management of pulmonary, peritoneal, and other extrahepatic metastases; molecular biomarkers; targeted therapies; immunotherapy; and conversion, neoadjuvant, and adjuvant treatment strategies; and comprehensive perioperative care, including nutritional assessment and optimization, prehabilitation, and Enhanced Recovery After Surgery (ERAS) protocols. Through state-of-the-art lectures, multidisciplinary panels, debates, video sessions, and case-based discussions, internationally recognised experts will examine both established principles and emerging concepts.
Particular emphasis will be placed on translating contemporary scientific evidence into practical, patient-centred clinical decision-making.
Our objective is not only to present the latest developments but also to encourage open discussion, facilitate the exchange of experience across disciplines, and foster a shared understanding of the most challenging clinical scenarios in colorectal cancer liver metastases.
We warmly invite you to join us, contribute to the scientific discussions, and share your expertise and experience with colleagues from Türkiye and around the world.
We also hope that you will enjoy Istanbul—a unique city where Europe and Asia meet, renowned for its rich history, cultural heritage, vibrant atmosphere, and warm hospitality.
We look forward to welcoming you to Istanbul for an inspiring and memorable scientific meeting.
With warm regards,
Ender Dulundu, MD, FACS, FASGO
Congress President