Figure 2.
Anaplastic large cell lymphomas. (A–C) Lymphohistiocytic variant of ALK-positive ALCL comprising a polymorphous infiltrate rich in histiocytes and plasma cells with large atypical cells (arrows) which are strongly positive for CD30 (B) and show a cytoplasmic staining for ALK (C) indicative of a translocation other than NPM-ALK. (D-E) Breast implant-associated ALCL: in situ lymphoma on the inner surface of the periprosthetic capsule (D), comprising numerous large anaplastic cells (E).