Malignant transformation is extremely rare. The therapeutic approach in cases of rare proliferating trichilemmal cyst is surgical removal with clear margins. Infection - Cysts may become tender and infected. Cutaneous horn - Cysts may exude contents and form a cutaneous horn. Cysts may be traumatized when combing or brushing hair.
Cysts are benign and malignant transformation is exceedingly rare.
Treatment is by surgical removal. Hereditary pilar cysts. Identification and differentiation of pilar cysts from epidermal cysts. Medicine is a constantly changing science and not all therapies are clearly established. New research changes drug and treatment therapies daily.