Epidermal cyst formation of the lip following autologous fat transplant

Epidermal cysts are derived from the follicular infundibulum and are exceptionally found over glabrous skin, including the lips and oral mucosa. To date, only approximately 10 cases of acquired epidermal cysts of the buccal mucosa have been reported in the literature without a clear etiology. 1 We, here, report another unusual case of an epidermal cyst formation on the lip that might have developed following an autologous fat transplant, giving possible explanations about its etiopathogenesis.