Malignant cell in Hodgkin's lymphoma is

Reed-Sternberg cells (also known as lacunar histiocytes for ceain types) are distinctive, giant cells found with light microscopy in biopsies from individuals with Hodgkin's lymphoma (a.k.a. Hodgkin's disease, a type of lymphoma). They are usually derived from ,B lymphocytes classically considered crippled germinal center B cells, meaning they have not undergone hypermutation to express their antibody. Seen against a sea of B cells, they give the tissue a moth-eaten appearance. Reed-Sternberg cells are large (30-50 microns) and are either multinucleated or have a bilobed nucleus with prominent eosinophilic inclusion-like nucleoli (thus resembling an "owl's eye" appearance)