Creatine and lumps on your body

A recent article on the BBC stated that bodybuillders in the UK were getting lumps on their chests after the taking of creatine. These were non cancerous lumps that formed on the chest and had to be surgically removed. The man being interviewed claimed creatine was the cause of this as creatine increases your testestorone levels and some of it (excess) is then turned into oestrogen. This is news to me. As far as I knew excess creatine is usually pissed out. The only side effect of creatine i assumed was that it was dangerous if you had kidney problems as creatine requires the drinking of a lot of water. Anyway, i have taken creatine in the past without issue and its worrying to hear these new developments. Keeping an eye on it.