title: Bluish papule in a middle-aged man.
authors.affiliation: Columbia University Medical Center and Memorial Sloan-Kettering Cancer Center, New York, NY.
authors.forename: Rachel P
authors.initials: RP
authors.lastname: Dubroff
authors.forename: Robert G
authors.initials: RG
authors.lastname: Maki
authors.forename: Klaus J
authors.initials: KJ
authors.lastname: Busam
authors.forename: Dana L
authors.initials: DL
authors.lastname: Sachs
mesh_terms: D000328:Adult; D002680:Chin; D002817:Chordoma / Q000556:secondary* / Q000601:surgery; D006801:Humans; D008297:Male; D012445:Sacrococcygeal Region; D012878:Skin Neoplasms / Q000556:secondary* / Q000601:surgery; D013125:Spinal Neoplasms / Q000473:pathology* / Q000601:surgery