A/Prof Kostalas practices in Port Macquarie, NSW. His research interests include serrated polyps, serrated polyposis syndrome and endoscopic submucosal dissection. He initially learnt ESD in Japan from world leaders including Prof Uedo, Prof Yahagi, Prof Toyonaga and Prof Saito. He organises Prof Toyonaga’s yearly visits to Port Macquarie to improve, disseminate and andvance Australian ESD practices.