What is the role of biopsy in the workup of pityriasis lichenoides?

Updated: Sep 11, 2020
  • Author: Jeffrey P Callen, MD; Chief Editor: Dirk M Elston, MD  more...
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A punch biopsy of 4 mm or larger or shave biopsy should be strongly considered to ensure the diagnosis and rule out lymphomatoid papulosis.

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