“…The cause of plantar verrucous carcinoma is not clear, but trauma, chronic irritation and/or viral infection may play a role 19, 20 . Barnett and Estes, 22 Kao, et al, 20 Klima et al, 23 and Mckee et al 18 all described cases in which verrucous carcinoma developed in areas of trauma or chronic irritation.…”