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Washington University Experience | NEOPLASMS (MESENCHYMAL, NON-MENINGOTHELIAL) | Chordoma | 16F Chondrosarcoma, low grade (looks like chordoma, Case 16) Ki67 1
16F Reactivity for proliferation marker Ki-67 (MIB-1 antibody) appears within only rare tumor cell nuclei. ---- This histomorphological/immunohistochemical pattern supports the diagnosis of low grade chondrosarcoma.