Pilomatricoma of the external auditory canal

Pilomatricoma was first described in 1880 by Malherbe as a calcifying epithelioma, but this was later changed to a benign tumour arising from the hair follicle matrix cells. It typically presents as a firm, painless well-circumscribed mass in children. They are most commonly found in the head and neck, particularly the peri-auricular area. They are slow growing and asymptomatic, generally appearing as a solitary mass but multiple lesions can be seen.