“…In 2011, Friedl et al reported on three patients who developed an SCC on chronic lichen planus of the lower leg and analysed another 24 cases within five years [11]. Five more cases have been reported since then in the international literature, mostly on lower legs and in association with hypertrophic or verrucous lichen planus [12], [13], [14], [15], [16]. We identified another two cases between published 2003 and 2007 [17], [18].…”