Table of Contents
Washington University Experience | NEOPLASMS (NON-GLIAL NON-NEURONAL) | Choroid plexus papilloma | 6F Choroid Plexus Papilloma (Case 6) Ki67.jpg
6F The proliferation marker Ki67 stains a small subset of tumor nuclei at variable densities, focally reaching up to 1.6% ---- Immunohistochemistry (not shown): Cytokeratin 7 (CK7) is positive in tumor cells but is negative for cytokeratin 20 (CK20).
