Quick answer
South Korea is one of Asia's most advanced centres for disease treatment, with cancer survival rates above the global average for several cancers and technologies such as proton beam therapy, da Vinci robotic surgery and MR-guided focused ultrasound in routine use at major Seoul hospitals. Costs run far below the United States, so international patient numbers grow every year, supported by full-service international desks with interpreters at tertiary hospitals like Asan, Samsung, Severance and Seoul National University Hospital.