Chronic ulceration and malignancy.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000175:diagnosis / Q000473:pathology*; D013587:Syphilis / Q000473:pathology; D014376:Tuberculosis / Q000473:pathology; D014456:Ulcer / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery