yeah it is possible-they can have two normal breasts and then in between (or sometimes under a breast) a nipple will show making it three breasts. i was creeped out when i read about it in a medical book lol. hope i helped! read more
Presentation. In some cases, the accessory breast may not be visible at the surface. In these cases, it may be possible to distinguish their appearance from normal breast tissue with MRI. read more