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. 2023 Jan 2;82(3):250–260. doi: 10.1093/jnen/nlac123

Figure 6.

Figure 6.

Histopathology of AG with MYBL1::QKI fusion-positive in a 46-year-old woman. (A) Sheets of small round cells with prominent perivascular slender cytoplasmic processes and numerous cytoplasmic vacuoles. (B) Spindle-shaped tumor cells are accentuated in the perivascular area. (C) The Rosenthal fibers are rich in a focal area of the tumor. (D) Massive calcifications are focally present. (E) Tumor cells are focally positive for L1CAM. (F) Dot- or ring-like positivity for EMA. (G) The tumor cells are positive for GFAP. (H) Ki-67 labeling index is 1.6% (A–F: H&E, E: L1CAM, F: EMA, G: GFAP, H: Ki-67 immunohistochemistry. Scale bars: A, B, D–F, H: 100 µm, C: 50 µm, G: 200 µm).