LAUSR

A 70-year-old woman presented with 1-month history of a cutaneous lesion located on the philtrum. Physical examination revealed a solitary erythematous plaque with a beaded appearance (Figure 1A). The lesion began as a small papule and slowly expanded to a size of 1.5 · 1.5 cm without pain or pruritus. No other lesions and no lymphadenopathy were evident. She had neither a relevant medical history nor constitutional symptoms. There was no evidence of recent infections, other dermatosis, or relevant environmental exposure. Laboratory examinations including a complete blood cell count, liver, renal, and thyroid function tests were all within normal limits. Both urine and serum protein electrophoresis revealed normal findings. Previous treatment with oral prednisone and superpotent topical corticosteroids was ineffective.