Читать книгу Anterior Skull Base Tumors - Группа авторов - Страница 42

This is the most frequent mesenchymal malignancy of the sinonasal tract, which more commonly affects the maxillary sinus, nasal cavity, and ethmoid. Grossly, the tumour presents as light-tan and fleshy with a smooth surface with soft-to-firm consistency [51–53]. Histologically, the tumour typically forms sweeping spindle cell interlacing bundles extending to surrounding tissue cells with moderate to low mitotic activity.