What do i need to consider when dealing with prepubescent nipple reconstruction?

Nipple Surgery?: I am not familiar with the terms you use in the question. If you are considering any type of nipple reconstruction, i would suggest that you meet with board-certified plastic surgeons to discuss your concerns, goals, and options. Ask to see lots of examples of their work helping patients in your situation. Best wishes.

Gynecomastia: Enlarged male breasts can come from a number of different causes. Before any treatment can be done, you must first have a complete physical exam and may need bloodwork to rule out hormonal issues. There are a number of medications that can also cause gynecomastia. Once all medical reasons are ruled out, one may consider treatment. You should seek a consultation with a plastic surgeon.