<prompt> A 12-year-old boy had a gradually progressive plaque on a buttock for the last 3 years. The plaque was 15 cm in diameter, annular in shape, with crusting and induration at the periphery and scarring at the centre. The most likely diagnosisTinea corporisGranuloma annulareLupus vulgarisBorderline leprosy  <response>: This boy hasAnnular plaqueOn buttockCrusting at peripheryScarring at centreThese suggest the diagnosis of lupus vulgaris.Annular lesions When the lesions of a skin disease are arranged in ring shape, they are called annular lesions. 