title: Malignant degeneration of lichen planus.
mesh_terms: D000293:Adolescent; D000328:Adult; D000671:Amputation, Surgical; D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D002908:Chronic Disease; D005260:Female; D006801:Humans; D006984:Hypertrophy; D007866:Leg; D008010:Lichen Planus / Q000150:complications* / Q000235:genetics / Q000473:pathology; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000473:pathology; D012871:Skin Diseases / Q000209:etiology; D012878:Skin Neoplasms / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D013546:Sweating