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Contempo 1999
April 28, 1999

Screening Mammography Under Age 50

Author Affiliations

Author Affiliations: Herbert Irving Comprehensive Cancer Center (Dr Antman) and the Division of General Medicine (Dr Shea), Columbia University College of Physicians and Surgeons, New York, NY.


Edited by Thomas C. Jefferson, MD, JAMA Fishbein Fellow.

JAMA. 1999;281(16):1470-1472. doi:10.1001/jama.281.16.1470

Mammography is a screening procedure that has decreased the risk of death from breast cancer by 25% to 30%, as shown in 7 randomized studies (Table 1).1-8 It can detect breast cancer or carcinoma in situ at 5 to 10 mm in diameter. Most physicians cannot reliably detect lesions smaller than 10 mm on physical examination, and patients generally seek medical attention for lesions that are 25 mm or larger.