Overdiagnosis and screening for thyroid cancer in Korea.

摘要

In Korea, the incidence of thyroid cancer has increased every year by about 25% for the past 10 years.1 In 2011, 40568 new cases of thyroid cancer were reported making this the most common type of cancer in Korea. According to estimates by GL0B0CAN 2012, the incidence of this cancer (age standardised rate 58-3% per 100 000 population) is more than 15 times greater than that of the UK and 5-6 times that of the USA.2 The proportion of smaii (<1 cm) tumours detected increased from 6-1% in 1962, to 43-1% in 2009; however, mortality rates have been almost constant during the past three decades.