Abstract
THE etiology and treatment of abnormal breast secretions are perplexing to those in practice and research alike. Abnormal function of the female breast may appear at any time of life from infancy to old age as indicated by the "witch's milk" of the newborn and postmenopausal discharges. Breast secretions are also observed in men, young and old. In diagnosis both intramammary and neurohumoral mechanisms must be considered. The investigation needed may range from a simple review of the history and physical examination to costly radiologic and laboratory tests and possibly extensive surgical procedures.The incidence of unilateral in contrast to . . .