Table 1.

Different approaches used on patients presenting with petrous apex cholesterol granuloma

	Approach	# of patients	Relative frequency (%)
EN	Total	76	26.6
	TS	39	13.6
	TC	18	6.6
	IP	11	3.8
	TC+IP	8	2.8
OP	Total	210	73.4
	IC	62	21.7
	IL	78	27.3
	MF	33	11.5
	TL	16	5.6
	SO	6	2.1
	Other	15	5.2

EN: Endoscopic endonasal; OP: open; TS: Transsphenoid approach; TC: Transphenoid transclival; IP: Infrapetrous; IC: Infracochlear; IL: Infralabyrinthine; MF: Middle Fossa; TL: Translabyrinthine; SO: Suboccipital