label: Primary CD30-Positive T-Cell Lymphoproliferative Disorder
label_lc: primary cd30-positive t-cell lymphoproliferative disorder
description: "A spectrum of T-cell lymphoproliferative disorders that arise from skin, subcutaneous tissue, and head and neck mucosal sites. They are characterized by the presence of CD30-positive neoplastic lymphocytes. Cells that resemble the hallmark cells of anaplastic large cell lymphoma are often seen."