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Washington University Experience | NEOPLASMS (NON-GLIAL NON-NEURONAL) | Choroid plexus papilloma | 15E Choroid Plexus Papilloma, Atypical (Case 15) Ki-67 1.jpg
15E The Ki-67 proliferative index is low. ---- The epithelial membrane antigen (EMA) is negative (not shown).