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Malignant peripheral nerve sheath tumor (MPNST) often has nuclei with one pointed and one flat end (bullet-shaped; arrows). This one also has loss of H3K27me3.
This low grade fibromyxoid sarcoma has rosettes (hyalinizing spindle cell tumor with giant rosettes) - H&E diagnosis! Note the hyperchromatic nuclei and compare their appearance to that of the endothelial cells!