Thanks for visiting HCM
I wish you have given more information about your growth. Is it the breast enlargement or a nodule sort of thing and what is the site.
Male breast enlargement in the days of puberty
can be due to hormonal
over-activity and is benign sort of thing and there is nothing to worry except for some cosmetic reasons for which you may consult plastic surgeon if it is too much.
Nodular recent growth, increasing in size, must be thoroughly evaluated as it can be malignancy especially in elderly population. I will advise you to go a simple test called fine needle aspiration cytology (FNAC) available with any pathologist. The report will guide further.