“…Sun exposure would seem to be an insignificant factor when considering primary axillary BCCs. Certainly a number of other factors have been implicated in the development of BCC, such as exposure to artificial ionizing radiation, arsenic, trauma, chronic inflammation, hamartomas, and immune deficiency 4,7 . However, these risk factors are seldom present when large cohorts of patients with BCC are carefully examined for causal associations 14 .…”