title: Malignant-benign lesions: unsolved problems.
mesh_terms: D001165:Arteriovenous Malformations / Q000473:pathology; D000013:Congenital Abnormalities / Q000473:pathology; D003937:Diagnosis, Differential; D005877:Gigantism / Q000473:pathology; D006801:Humans; D008545:Melanoma / Q000473:pathology; D009369:Neoplasms / Q000145:classification* / Q000473:pathology; D009456:Neurofibromatosis 1 / Q000473:pathology; D009508:Nevus, Pigmented / Q000473:pathology; D012590:Sclera / Q000002:abnormalities