title: Dermatofibroma occurring in a smallpox vaccination scar.
mesh_terms: D000328:Adult; D002921:Cicatrix / Q000473:pathology*; D005350:Fibroma / Q000473:pathology*; D006801:Humans; D008297:Male; D012878:Skin Neoplasms / Q000473:pathology*; D012899:Smallpox / Q000517:prevention & control; D014611:Vaccination