Lee Eun-sook
South Korean breast cancer expert

Lee Eun-sook (Korean: 이은숙; Hanja: 李銀淑; born 27 February 1962) is a South Korean surgical oncologist with expertise in breast cancer at National Cancer Center (NCC) and previously served as its president from 2017 to 2020. Lee was the first woman to lead the center since its creation in 2000. She was an ex officio president of the NCC Graduate School of Cancer Science and Policy (GCSP) and NCC Foundation's board. She has also served as the secretary-general of Asian National Cancer Centers Alliance from the beginning of her presidency.
She joined the National Cancer Center in 2000 when it was founded and since that time has continued to work at NCC, assuming numerous roles. Since 2011 she has been working as a specialist at NCC's Center for Breast Cancer.
After graduating from Masan Girls' High School as top of her natural sciences class, she went to Korea University College of Medicine where she earned three degrees in medicine from bachelor to Ph.D. Lee built her academic career at University of Texas Houston, Korea University College of Medicine, Northwestern University and NCC. In 1995 she completed a post-doctoral fellowship at Department of Biochemistry and Molecular Biology of University of Texas MD Anderson Cancer Center.
From 1998 to 2000 she was a visiting assistant professor at Robert H. Lurie Comprehensive Cancer Center of Northwestern University. After working as an instructor for approximately five years, she became an assistant professor of surgery at College of Medicine of Korea University in 1996 where she worked until 2000. In 2008 she came back to Korea University and worked as a professor of general surgery at Breast and Endocrine Cancer Branch at its hospital until 2011.
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