Management of Anterior Skull Base Defect Depending on Its Size and Location

Table 1

Type of skull base approach depending on the lesion.

Expanded endoscopic skull base approach	Final diagnosis
Transcribriform	Meningioma olfactory fossa (𝑛 = 2)
	Esthesioneuroblastoma (𝑛 = 2)
	Sinonasal carcinoma (𝑛 = 4)
Transtuberculum/transplanum	Meningioma planum sphenoidale (𝑛 = 5)
	Craniopharyngeoma (𝑛 = 6)
	Sarcoma (𝑛 = 1)
	Meningioma tuberculum sellae (𝑛 = 4)
	Rathke’s cyst (𝑛 = 2)
	Suprasellar adenoma (𝑛 = 1)
	Polycystic astrocytoma (𝑛 = 1)
Transclival	Chordoma (𝑛 = 7)
	Chondrosarcoma (𝑛 = 3)
	Myxofibrosarcoma (𝑛 = 1)
	Fibrous dysplasia (𝑛 = 1)
	Inflammatory pseudotumor (𝑛 = 1)
	Petroclival meningioma (𝑛 = 3)
	Nasopharyngeal tumor x with extension to clivus (𝑛 = 2)
	Squamous cell carcinoma (𝑛 = 2)
Ethmoidal-pterigo-sphenoidal	Adenoma with extension to cavernous sinus (𝑛 = 3)
	Neurofibroma (𝑛 = 1)
Transorbital	Neurofibroma (𝑛 = 1)
Transpalatal	Congenital benign teratoma (𝑛 = 1)