Dr. Hanjong Ahn is a urologic oncology surgeon who specializes in treating prostate cancer and urothelial cancer. He has expertise in robotic surgery and has completed more than 4,200 robotic prostatectomies for prostate cancer. He dedicated himself to the initiation and establishment of East Asia Urologic Oncology Society. His research is focused on mechanisms of drug resistance in the treatment of prostate cancer and the application of new drugs or methods to overcome the treatment resistance.