“…Although the majority of cases did not reveal possible risk factors of BCC of the NAC, our review revealed two males (Table 1 , cases 11 and 26) [ 13 , 27 ] and two females (Table 2 , cases 8 and 13) [ 40 , 44 ] had increased sun exposure to the chest from shirtless sunbathing. Nine patients (9/26, 34.6%) had a prior history of BCC [ 14 , 17 , 20 , 21 , 25 , 28 , 32 ]. Two males reported prior trauma to the chest (2/27, 7.4%) [ 14 , 21 ].…”