I would think first - SOUND THE ALARMS... Because breast tissue development does start with the NIPS. At least technically in girls, which we are not. It is possible that he has been doing some development unnoticed prior. I will say that if I goof around when I am untrained, I can amost feel some pea size lumps around the pecks IFI AM AM REALLY PICKING. I have typically either found one on the other side to match (which is a good thing), or just never stumbled accross it again.. They may even be lymph nodes which would not be a great sign for anyone either.
There was a thread about a year of less ago about a guy similar, bhe wound up confessing to a car accident of something and I think said doc said it was just tissue growth due to. I dont recall.
One thing you can be sure of is that cancer does not pop up overnight as a large mass of its own, and also these type events are inflammations of either general histamine, or infection, lumph, normal we hope. But with that said, it should not be discount that an action like this COULD result as an inidcation that a cancer is ensuing, and that it is a temporary inflammation DUE TO. There is no way to know unless breast cancer is specifically found.
Finally, it should never be discounted when one does not have actual gyno as predisposed tissue deveopment general, of actual duct/gland development. It should not be understated that - If ones titties are SINGING with the lovely TINGLING of excessive steroid dosing, you can bet gyno development is likely in action. And when you consider that cancer starts with just a coulple of miscroscopic cells only to TAKE A LONG TIME to mature to a notable physical mass, WHAT ARE WE REALLY DOING TO OURSELVES AT THAT POINT?!?! They say MANY men have Prostate cancer as early as forties and fifties only to have if finally report at the age of seventy. So if we have cause the initial TRIGGER for cancer activity, CAN IT EVEN BE STOPPED PERMANENTLY??!!!!! Your friend should be concerned EITHER way, and should never touch exogenous hormones again, considering they are compleley NOT UNDERSTOOD, and he is leaving himself to the trust of the cannibals that really our medical system is.
Can you imagine in 50 years when we look back and scoff at the medical system that let illness FIRST ensue, only motivated by the profit to repair it?! The day the a simply blood draw or general scan detects the slightest cellular anomaly ensuing, and a treatment is prescribed to nip it in the bud when it is only 10 cells, instead of ten bazillion and already causing collateral and systemic damage???! Until then, they are doing their best. So until the technology arrives that allows us to PROFIT from the art of PREVENTION, we will have to be CUT ON/Cannibalized. LOL And with all that said, can you now see the inherent implications of acknowleging the mapping of the human genome structure!!?? THE SAFETY in this analysis is that you can see where the logic would remain to allow "Flawed humans" to procreate, else there would be no in$entive to sell new FLAW DETECTING TECHNOLOGY. So the day this arrives is the day you are living LOGAN's RUN get your green glowing diamond in your palm, and try not to think about the day it turns red!!!....