RT Book, Section A1 Tannous, Zeina A1 Avram, Mathew M. A1 Tsao, Sandy A1 Avram, Marc R. SR Print(0) ID 1175823599 T1 Gynecomastia T2 Color Atlas of Cosmetic Dermatology, 2e YR 2011 FD 2011 PB The McGraw-Hill Companies, Inc. PP New York, NY SN 9780071635035 LK dermatology.mhmedical.com/content.aspx?aid=1175823599 RD 2024/04/23 AB Gynecomastia is the increased presence of benign glandular tissue, in the form of a firm mass, around the nipple in males (Fig. 57.1). It is accompanied by increased fat deposition. In contrast, increased fat deposition alone, in the absence of glandular proliferation, is known as pseudogynecomastia. It can be bilateral or unilateral. It is common at birth, puberty, middle age, and in elderly adults. Many cases are idiopathic. Multiple precipitating factors exist including hormonal abnormalities, medication, cirrhosis, hypogonadism, testicular tumors, hyperthyroidism, and chronic renal insufficiency. For this reason, in the appropriate clinical setting, the appearance of gynecomastia demands a medical workup.