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Rare skin appendage tumour on the right leg: a case of primary cutaneous cribriform carcinoma
  1. Kashini Andrew1,
  2. James M Carr1 and
  3. Claudia Roberts2
  1. 1Dermatology Department, University Hospitals Birmingham NHS Foundation Trust, Solihull, UK
  2. 2Histopathology Department, University Hospitals Birmingham NHS Foundation Trust, Solihull, UK
  1. Correspondence to Dr Kashini Andrew; kashini.andrew1{at}nhs.net

Abstract

A woman in her 60s presented with a longstanding history of a purplish, fleshy and pedunculated nodule on the right shin on a background of bilateral lower limb lymphoedema. A shave biopsy with double curettage of the base of the lesion revealed a nodular tumour with hyperchromatic basaloid cells arranged in a cribriform pattern and encircling eosinophilic substance. Immunohistochemistry staining showed cells positive for pancytokeratin, low molecular weight keratin, BerEP4 and negative for cytokeratin 20. There were no clinical or radiological features of primary visceral malignancy. These histological and immunohistochemical features favour a diagnosis of primary cribriform carcinoma of the skin. This is a rare, indolent skin appendage tumour of presumed apocrine origin with no reported cases in the literature of metastasis or local recurrence after excision.

  • Dermatology
  • Skin cancer

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Footnotes

  • Contributors KA, JMC and CR all contributed to the planning and writing of the manuscript. CR prepared and reported the histology slides.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

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