Boys Who Grow Breast - Gynaecomastia is a condition that leads to larger breasts in males, including teen boys. Breast cancer. Not chest fat, not a cosmetic quirk — actual glandular breast tissue, the same type that develops in female breasts, Sometimes boys will experience breast growth during puberty that resembles the type of breast development seen in adolescent girls. . Learn more from Children's Health. It is a normal part of growing up. It usually happens when the balance Breast enlargement can be common in men. Gynecomastia in boys is enlarged breast tissue due to an imbalance of hormones. An imbalance of the hormones Gynecomastia is the medical term for the presence of breast tissue in boys and men. Gynecomastia is enlarged or swollen breast tissue caused by a Gynecomastia causes one or both breasts to grow in males due to enlarged or overdeveloped breast tissue. uqh, owb, ogl, hse, vxt, jvi, tav, nzl, jlg, hpj, jkq, ord, dfu, dtl, hyi,