Susan Summerton of the Perelman School of Medicine spoke about how tattoos can affect breast cancer screenings. “It could be 20 to 30 years later after a tattoo that you can see changes in the lymph nodes,” she said. “I’m a breast imager so I care most about it because I see the tattoo pigment in lymph nodes in the armpit. But people are seeing it in other lymph nodes that are also tricking them into thinking that there’s a tumor, like they are a melanoma.”