Article Text

Download PDFPDF
An uncommon diagnosis for a recurrent erythematous patch in a paediatric patient
  1. Priya Umesh Patel
  1. Department of Dermatology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK
  1. Correspondence to Dr Priya Umesh Patel, priya.patel14{at}


A 14-year-old girl presented with a circular erythematous patch over the left buttock for approximately 10 years, with ongoing ulceration and papules developing over the last 4 years. Punch biopsies were taken within and above the patch for diagnosis. Both revealed marked inflammatory infiltrates with atypical, irregular lymphocytes and increased mitosis. Immunostaining revealed CD8 positivity and a pan T helper cell phenotype. T cell receptor gene rearrangement analysis showed T cell clonality in both biopsies. These findings were consistent with mycosisfungoides and associated lymphomatoid papulosis. Both are rare conditions but have been associated in 5%–20% of cases. A definitive association has not yet been established; however, T cell monoclonality shows 50%–60% share a common origin. Management options are extensive with no one treatment showing superiority. Our patient received low-dose radiotherapy with good outcomes, but subsequently required further radiotherapy.

  • dermatology
  • medical management
  • skin cancer

Statistics from


  • Contributors PUP has been involved in the drafting and editing of the case report.

  • Competing interests None declared.

  • Patient consent Guardian consent obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.