Gynecomastia
Overview
 
Gynecomastia or Gynaecomastia, , is the abnormal development of large mammary gland
Mammary gland
A mammary gland is an organ in mammals that produces milk to feed young offspring. Mammals get their name from the word "mammary". In ruminants such as cows, goats, and deer, the mammary glands are contained in their udders...

s in males resulting in breast enlargement. The term comes from the Greek
Greek language
Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...

 γυνή gyné (stem gynaik-) meaning "woman" and μαστός mastós meaning "breast". The condition can occur physiologically in neonates (due to female hormones from the mother
Galactorrhea
Galactorrhea or galactorrhoea is the spontaneous flow of milk from the breast, unassociated with childbirth or nursing.Contemporary Maternal-Newborn Nursing Care defines galactorrhea as "nipple discharge." -Causes:...

), in adolescence
Adolescence
Adolescence is a transitional stage of physical and mental human development generally occurring between puberty and legal adulthood , but largely characterized as beginning and ending with the teenage stage...

, and in the elderly (Both in adolescence and elderly it is an abnormal condition associated with disease or metabolic disorders).
 
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