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About

Hang-Seok Chang is a pioneering endocrine surgeon whose work has fundamentally reshaped the landscape of minimally invasive thyroid and parathyroid surgery. His principal research focus lies in the development and refinement of robotic surgical techniques for the neck and endocrine glands, with a particular emphasis on the gasless, transaxillary approach. Chang’s major contributions are documented in his landmark studies, which demonstrated the safety, feasibility, and superior cosmetic outcomes of robotic thyroidectomy for both benign and malignant disease. His seminal 2009 paper on robotic thyroid surgery using the da Vinci S system, with 447 citations, along with his report on the first 100 robotic thyroid cancer patients (386 citations), established the foundational protocols that have been adopted globally. These works collectively show that the approach achieves excellent oncologic results while eliminating visible neck scars. Beyond the thyroid, Chang has innovated in robotic adrenalectomy and parathyroidectomy, proving that these technologies can be applied to a wider range of endocrine pathologies. With over 1,000 combined citations for his key works, Chang is recognized as a true architect of modern, scarless endocrine surgery, profoundly impacting patient quality of life and setting the standard for the field.