Disease or Syndrome
gynecomastia
gyn·e·co·mas·ti·a [ jin-i-koh-mas-tee-uh, gahy-ni-, jahy-ni- ]
Subclass of:
Breast Diseases
Definitions related to gynecomastia:
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A non-neoplastic focal or diffuse proliferation of glandular tissue of breast in males.NCI ThesaurusU.S. National Cancer Institute, 2021
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Abnormal development of large mammary glands in males resulting in breast enlargement.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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Enlargement of the BREAST in the males, caused by an excess of ESTROGENS. Physiological gynecomastia is normally observed in NEWBORNS; ADOLESCENT; and AGING males.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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Female mammary morphology in a XY genotype.CRISP ThesaurusNational Institutes of Health, 2006
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Femalelike development of the male breasts; may occur as an adverse effect of antipsychotic and antidepressant drugs because of increased prolactin levels or anabolic-androgenic steroid abuse.Sadock's Comprehensive Glossary of Psychiatry and PsychologyBJ Sadock Titles Press, 2012
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Presence of breast tissue in males.NICHD Pediatric TerminologyU.S. National Cancer Institute, 2021
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A disorder characterized by excessive development of the breasts in males.Common Terminology Criteria for Adverse EventsU.S. National Institutes of Health, 2021
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Gynecomastia is hypertrophy of breast glandular tissue in males. It must be differentiated from pseudogynecomastia, which is increased breast fat, but no enlargement of breast glandular tissue.Merck & Co., Inc., 2020
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Gynecomastia is a benign enlargement of the male breast resulting from a proliferation of the glandular component of the breast (see the image below). Gynecomastia is defined clinically by the presence of a rubbery or firm mass extending concentrically from the nipples.WebMD, 2019
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Gynecomastia is the benign enlargement of the male breast with firm tissue extending concentrically beyond the nipple. Histologically, gynecomastia is the benign proliferation of breast ducts and duct epithelial hyperplasia accompanied by varying amounts of inflammation, edema, stroma, and fibrosis. Male breast enlargement entirely due...Athenahealth, Inc., 2019
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Gynecomastia, enlargement of the breasts in the male, usually because of hormone imbalance. The growth and development of male breasts are like those of the female until puberty. The male reproductive organs (testes) then begin secreting male hormones (androgens), which normally suppress further...Encyclopedia Britannica, Inc., 2020
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