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Original Contribution
April 20, 1964

Concordant Disease in Identical Twins

Author Affiliations


From the Department of Medicine and the Breast Clinic of the Department of Surgery, Johns Hopkins Hospital.

JAMA. 1964;188(3):217-220. doi:10.1001/jama.1964.03060290021004

A unique pair of identical twins were concordant for breast cancer, diabetes mellitus, nontoxic goiter, hypertension, cholecystitis, obesity, relaxed pelvic outlet, and myomata uteri. The medical literature for concordant breast cancer in identical twins is reviewed and there seems to be a strong tendency for these tumors to occur in the same breast and at the same time.