12-year-old boy chest has hard lump how to return a responsibility

12-year-old boy chest hard lumps may be adolescent development, mastitis and breast cysts and other reasons.

1, adolescent development

in adolescence, boys breast may appear hard lumps or pain. This is due to the body began to secrete hormones caused by changes in breast tissue, usually normal physiological phenomenon, do not worry too much.

2, mastitis

mastitis is usually caused by bacterial infection, bacterial invasion of breast tissue, can cause local swelling, touch can feel hard lumps.

3, breast cyst

breast cyst is a benign lesion, generally related to breast duct obstruction, usually composed of liquid and cells, cyst generation can lead to local lumps and pain.