—A man of Russian descent, aged 24, single, fireman, appearing very muscular and robust, came to me for the first time, complaining of pain in the mammary glands, and a milk-like secretion oozing from the nipples. He informed me that during and after his laboring hours, the glands became more painful and the secretions increased to such a degree that it saturated his clothing covering the nipples. The patient is in the habit of manipulating and massaging his left gland during his idle time; this, in my opinion, has been a great factor in developing the organ if any tendency to lactation previously existed. This pain or general soreness has been present at varying intervals during the last two years, but no secretive function existed until eight weeks before examination. The latter process has been increasing but slowly.
—I noted that the left gland was materially larger than
CREASY RC. LACTATION FROM THE MAMMARY GLAND IN THE MALE. JAMA. 1912;LVIII(11):747-748. doi:10.1001/jama.1912.04260030145003