BMJ 2011; 342 doi: http://dx.doi.org/10.1136/bmj.d1133 (Published 23 February 2011) Cite this as: BMJ 2011;342:d1133
  1. Susana Sidhu, specialty training 4 dermatology,
  2. Andrew D Morris, consultant dermatologist
  1. 1The Welsh Institute of Dermatology, University Hospital of Wales, Cardiff CF14 4XW, UK
  1. susana-sidhu{at}doctors.org.uk

This patient’s lesion had been present for a year and discharged pus intermittently. It did not look typical of …

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