Lymphocyte predominant Hodgkin disease.

(A) Radioactive in situ hybridization with a probe specific for Oct2. L&H cells show dense signals. (B) Immunostaining (APAAP) for Oct2. The nuclei of the L&H cells are strongly labeled. (C) Immunostaining (APAAP) for BOB.1/OBF.1. The nuclei and the cytoplasma (less intense) of the L&H cells display a moderately strong labeling.