title: Multinodular pilomatrixoma.
abstract: A hard deep nodule, 6 x 3 mm in size, was excised from the cheek of a 12-year-old girl. The histological sections showed a multinodular cyst-like proliferation, each nodule showing the typical structure and cytology of pilomatrixoma. A comparison is made between this case and the budding phenomenon that has been described in isthmus-catagen (tricholemmal) cyst.
authors.affiliation: Department of Dermatology, Investigation Unit of the Hospital Clínico San Carlos, Facultad de Medicina, Universidad Complutense, Madrid, Spain.
authors.forename: Raquel S
authors.initials: RS
authors.lastname: Simón
authors.forename: Evaristo
authors.initials: E
authors.lastname: Sánchez-Yus
mesh_terms: D001707:Biopsy, Needle; D002610:Cheek; D002648:Child; D005260:Female; D006201:Hair Diseases / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D018296:Pilomatrixoma / Q000473:pathology* / Q000601:surgery; D011379:Prognosis; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome