CD30 (Ber-H2)

Anti-CD30 detects a formalin-resistant epitope that is expressed by Reed-Sternberg cells in classic Hodgkin lymphoma, the majority of anaplastic large cell lymphomas, primary cutaneous CD30 positive T-cell lymphoproliferative disorders,1-3 and in embryonal carcinomas.4 Occasionally diffuse large B-cell lymphoma stains with this antibody.3 This antibody also stains plasma cells in paraffin-embedded tissue. However, reactive immunoblasts are immunoreactive with this antibody. The staining pattern of anti-CD30 in lymphoma or embryonal carcinoma is different, with the former being membranous and exhibiting Golgi zone accentuation in location, and the latter being membranous only.4