title: Paget's disease of the breast presenting as a cutaneous horn.
abstract: A 67-year-old woman developed a cutaneous horn on the nipple of her right breast. Biopsy of the skin underlying the horn disclosed Paget's disease of the breast. An intraductal adenocarcinoma of the same breast was found on mastectomy. High index of suspicion is mandatory in evaluating all nipple lesions.
mesh_terms: D000368:Aged; D001943:Breast Neoplasms / Q000473:pathology*; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007642:Keratosis / Q000473:pathology; D008197:Lymph Node Excision; D008408:Mastectomy; D009558:Nipples / Q000473:pathology; D010144:Paget's Disease, Mammary / Q000473:pathology*; D012871:Skin Diseases / Q000209:etiology / Q000473:pathology*