Welcome to the tumultous world of puberty
. Yes a lot of boys do develop breast nodules around the time of puberty, this is NOT breast cancer
, so please be reassured. Most men do not have equal sized testicles, and one usually hangs lower than the other giving the impression of disparity in size. Please do not worry and do confide in either parent if you are still anxious. Only if the lumps keep growing beyond a year then you should consult a doctor.