“…Klinefelter syndrome, anarchism, acquired testicular failure, receptor defects, and hyperthyroidism), and drugs (anabolic steroids, digitalis, isoniazid, tricyclic antidepressants, and marijuana). It can also occur as a result of an imbalance between estrogen and androgen [2,5]. Gynecomastia is staged according to the Tanner grading system using clinical findings and US.…”