title: PHOTO QUIZ. Enlarging ulcerated plaques on bilateral arms of a 64-year-old man.
authors.affiliation: Department of Dermatology, Wan Fang Hospital, Taipei Medical University, Taiwan, Republic of China.
authors.forename: Yu-Ting
authors.initials: YT
authors.lastname: Lin
authors.forename: Wen-Tsao
authors.initials: WT
authors.lastname: Ho
authors.forename: Po-Yu
authors.initials: PY
authors.lastname: Shih
mesh_terms: D001132:Arm / Q000473:pathology*; D001706:Biopsy; D020405:Dermis / Q000473:pathology; D004890:Erythema / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014456:Ulcer / Q000473:pathology*