Pilomatrix carcinoma: a rare cause of facial tumor.

Author(s): Alcantara-Gonzalez, Javier; Sanchez-Largo, Maria Elena; Caminoa, Alejandra; Erana, Itziar; Calzado-Villarreal, Leticia | Abstract: Pilomatrix carcinoma is a rare malignant tumor that originates from hair matrix cells. It is not usually considered in a differential diagnosis owing to its low incidence. We present a case of this uncommon entity and review the literature.