It's a long story... But can steroids cause testicular cancer? What if a guy had surgery... shudder. Would it be a bad idea to use AAS during recovery?
As of this moment there is no direct or for that matter indirect evidence that aas use and cancer are related. Yes, there is some here-say and conjecture for example along the lines of Jason Giambi and Lial Alzado but that of course is just media spin.
Clean bill of health