NLPHL. POPCORN (L cells) CELLS. Non-classical phenotype = CD20 and CD45 pos (and bcl6 and EMA like ALCL), CD15 and 30 negative. Background lymphs are mostly CD20 pos B cells. Distinguish from TCHRBCL? NLPHL has CD57 positive T cells ringing the popcorn cells. The node shows nodular or vaguely nodular proliferation of small lymphs and histiocytes, and PTCG is thought to be a precursor lesion.