Malignant change in smallpox vaccination scars.
D000328:Adult; D002280:Basal Cell Carcinoma; D002921:Cicatrix / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000209:etiology*; D012900:Smallpox Vaccine; D014611:Vaccination / Q000009:adverse effects*
D012900:Smallpox Vaccine