title: Matrical carcinoma of the skin.
abstract: Two elderly patients with unusual hair-follicle tumors of the face are reported. The lesions showed some histologic resemblance to pilomatrixomas but differed by the presence at the advancing edge of cytologically-atypical cells without the usual shadow cell transformation and maturation of pilomatrixomas. The term matrical carcinoma is proposed for these tumors.
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000473:pathology*; D005153:Facial Neoplasms / Q000473:pathology*; D006197:Hair; D006801:Humans; D008297:Male; D012878:Skin Neoplasms / Q000473:pathology*