You might have heard that reduced fertility can be a side effect of treatment. Whether that applies to your situation depends on your diagnosis, the type of treatment you're getting, and the doses of medicines or radiation. Everyone is different, so it's best to talk with your medical team about your own situation.
When a guy goes through puberty, one of the body's changes can be a condition called gynecomastia, when breast tissue enlarges. About half of all boys have gynecomastia during puberty, and it's usually temporary.