In true gynecomastia, glandular breast tissue develops in one or both breasts. This tissue may be located directly behind the nipple. Gently feel your breast with your fingertips. If you have gynecomastia, you should feel a soft, rubbery lump in one or both breasts.  If you feel a lump in your breast, go to the doctor immediately. A hard lump may be a tumor. Gynecomastia may occur in just one breast or both breasts at once. The size of the lump can vary, and may not be the same in both breasts. Breast buds in puberty-aged boys are typically the size of a nickel or quarter. Gynecomastia may cause soreness, especially when you touch or press on your breast. If your breasts are causing you a lot of pain or discomfort, make an appointment to see your doctor right away. True gynecomastia is different from breast enlargement caused by a buildup of fat in the chest. If your breasts are enlarged and soft to the touch, but you do not feel tenderness or a lump in your breast or behind your nipple, you may have pseudogynecomastia. This condition usually goes away with weight loss. It is possible that being overweight can also contribute to the development of true gynecomastia, since fatty tissue tends to boost the body’s production of estrogen.

TL;DR in Indonesian:
Identifikasi ada atau tidaknya benjolan lunak di payudara. Waspadai nyeri pada payudara. Identifikasi ada atau tidaknya jaringan lemak lunak untuk mendeteksi pseudoginekomastia.