“That’s because having a tattoo over a mole especially can make it difficult to detect the development of skin cancer, the researchers said. Reporting July 31 in the journal JAMA Dermatology, researchers in Germany pointed to the case of a young man who developed melanoma on a pre-existing colored skin lesion (mole or birthmark) within a tattoo during and between phases of laser tattoo removal. Sixteen other cases of melanoma developing within tattoos have been reported in English-language journals, the study authors said.
“In general, tattoos should never be placed on pigmented lesions; if they are, the tattoos should never be treated by laser,” said the researchers, who were led by Dr. Laura Pohl of Laserklinik Karlsruhe. Dermatologists in the United States concur that moles should be no-go areas for tattoos. “Fifty percent of all melanomas develop in pre-existing moles,” said Dr. Hooman Khorasani of the Icahn School of Medicine at Mount Sinai, in New York City. “It is harder to do surveillance on moles that are covered by tattoos, as the tattoo ink camouflages the mole and sometimes interferes with some of the tools we use for detection.” Tattoo removal can make mole surveillance more difficult too, he said. Continue reading “Tattoos that hide melanoma”