Proliferating trichilemmal cyst

Proliferating trichilemmal cysts (also known as a 'Pilar tumor', 'Proliferating follicular cystic neoplasm', 'Proliferating pilar tumor', and 'Proliferating trichilemmal tumor') are a cutaneous condition characterized by proliferations of squamous cells forming scroll-like structures.:678 Proliferating trichilemmal cysts (also known as a 'Pilar tumor', 'Proliferating follicular cystic neoplasm', 'Proliferating pilar tumor', and 'Proliferating trichilemmal tumor') are a cutaneous condition characterized by proliferations of squamous cells forming scroll-like structures.:678