Pilomatrixoma is a benign neoplasm of ectodermal hair follicle germinal matrix cell origin. At least 50% of pilomatrixomas are reported to arise in the head and neck, and 40% occur before the age of 10 years.1- 3 Pilomatrixoma is the third most common reason for excision of a cervicofacial mass in children, after lymphadenopathy and epidermoid cysts.
Kakarala K, Brigger MT, Faquin WC, Hartnick CJ, Cunningham MJ. Cystic PilomatrixomaA Diagnostic Challenge. Arch Otolaryngol Head Neck Surg. 2010;136(8):830-833. doi:10.1001/archoto.2010.130