title: Solitary Annular Plaque on the Scrotum.
authors.affiliation: Departments of *Dermatology, and †Pathology, Hospital Universitari Son Espases, Palma Mallorca, Spain.
authors.forename: Nicole
authors.initials: N
authors.lastname: Knöpfel
authors.forename: Luis Javier
authors.initials: LJ
authors.lastname: Del Pozo
authors.forename: Isaac
authors.initials: I
authors.lastname: Díaz
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001706:Biopsy; D004890:Erythema / Q000188:drug therapy / Q000382:microbiology* / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D010401:Penicillin G Benzathine / Q000627:therapeutic use; D012611:Scrotum; D012867:Skin / Q000187:drug effects / Q000382:microbiology* / Q000473:pathology; D013587:Syphilis / Q000188:drug therapy / Q000382:microbiology* / Q000473:pathology; D013591:Syphilis, Cutaneous / Q000188:drug therapy / Q000382:microbiology* / Q000473:pathology; D016896:Treatment Outcome; D014210:Treponema pallidum / Q000187:drug effects / Q000302:isolation & purification*; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents; D010401:Penicillin G Benzathine