Quiz: Non-healing skin lesions

A 38-year-old Caucasian male living in NT presents with a three-month history of non-healing skin lesions on his arm.

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Dr McGuinness is an advanced trainee in infectious diseases, Royal Darwin Hospital, NT.

Dr Ralph is a physician in infectious diseases at Royal Darwin Hospital, senior clinical researcher at Menzies School of Health Research, and clinical director of RHD Australia, NT.