title: Inverted follicular keratosis clinically mimicking malignant melanoma.
abstract: A 70-year-old man had a rapid growth of a pigmented eyelid lesion, previously stationary for at least 50 years. Because of the suspicion of malignant melanoma, the lesion which resembled a cutaneous horn was excised. Histologic examination demonstrated a benign epithelial tumor, inverted follicular keratosis.
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D005141:Eyelid Diseases / Q000175:diagnosis / Q000473:pathology; D005142:Eyelid Neoplasms / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007642:Keratosis / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis*