Читать книгу Anterior Skull Base Tumors - Группа авторов - Страница 31

This is a rare skull base and sinonasal tract malignant tumour composed of high-grade carcinomatous, sarcomatous, and immature neural elements [34, 35]. Benign and malignant germ cell elements may also be present. The most frequent sites are the ethmoid, maxillary sinus, and nasal cavity in elderly male patients. The carcinomatous component can be either squamous, adeno, or neuroendocrine, and the sarcomatous can be cartilaginous, bony, or skeletal muscle in nature. Neural elements may contain primitive rosettes with neurofibrillary features [36].