What are the histologic findings of primary cutaneous peripheral T-cell lymphoma?

Updated: Apr 20, 2020
  • Author: Lauren C Pinter-Brown, MD; Chief Editor: Emmanuel C Besa, MD  more...
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Primary cutaneous peripheral T-cell lymphoma, unspecified, shows an aberrant CD4+ T-cell phenotype with variable loss of pan–T-cell antigens. CD30 staining is negative or restricted to a few scattered tumor cells. Rare cases may show coexpression of CD56. Expression of cytotoxic proteins is uncommon. [57]

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