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Section of Endocrinology, Veterans Administration Hospital, and the Department of Medicine, University of Minnesota Minneapolis, Minnesota 55417
Address requests for reprints to: Dr. Frank Q. Nuttall, Section of Endocrinology, Veterans Administration Hospital, 54th Street and 48th Avenue South, Minneapolis, Minnesota 55417.
The prevalence of palpable gynecomastia was determined in 306 normal adult men ranging in age from 17-58 yr. Palpable breast tissue was present in 36% and was bilateral in all but 7 subjects. In the great majority of cases, the gynecomastia was 4 cm or less in diameter. A diameter greater than 5 cm was distinctly unusual. With advancing age there was a progressive increase in the prevalence of gynecomastia. This increase was most striking fn those over the age of 44 and in the 20- to 24-yr-old group compared to those 19 yr old or less. In those over the age of 44, the prevalence was 57%. These data indicate that palpable gynecomastic is common in normal adult men. This high prevalence must be taken into consideration when attributing gynecomastia to a drug or disease state. (J Clin Endocrinol Metab 48: 338, 1979)
Received February 27, 1978.
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