Early stage mycosis fungoides with focal CD30-positive large cell transformation

Regression of CD30-positive large cell transformation arising on patch lesion of early mycosis fungoides

CD30-positive large cell transformation that occurs in early mycosis fungoides potentially possesses characteristics of spontaneous regression as with CD30-positive lymphoproliferative disorders. Such transformation may not relate to poor prognosis.

Primary Cutaneous CD30+ Anaplastic Large Cell Lymphoma: A Rare Association With Large Plaque Parapsoriasis

Primary cutaneous CD30-positive lymphoproliferative disorders represent the second most common subgroup of cutaneous T-cell lymphomas and include lymphomatoid papulosis, primary cutaneous anaplastic large cell lymphoma, and borderline lesions. Primary cutaneous anaplastic large cell lymphoma is characterized by the presence of solitary or localized nodules or tumors located on the extremities or the cephalic or cervical region. Large plaque parapsoriasis is a chronic inflammatory disorder that associates a high risk of progression to mycosis fungoides. We report a case of CD30+ primary cutaneous anaplastic large cell lymphoma in a patient with a long history of large plaque parapsoriasis.