Pneumatization of the sphenoid sinus is the major factor determining the variations of adjacent vital structures

Şimşek, Sadullah; İşlek, Akif

doi:10.1186/s43163-023-00560-7

The Egyptian Journal of Otolaryngology

Table 2 Frequencies of variations of the sphenoid sinus and associated structures according to the gender on the right and left side

From: Pneumatization of the sphenoid sinus is the major factor determining the variations of adjacent vital structures

			Right					Left
			Gender				p	Gender				p
			Female		Male			Female		Male
			n	%	n	%		n	%	n	%
Sphenoid sinus sagittal plane	Pre-sellar	No	99	99.0	152	93.8	0.056	98	98.0	151	93.2	0.140
	Pre-sellar	Yes	1	1.0	10	6.2	0.056	2	2.0	11	6.8	0.140
	Sellar	No	81	81.0	138	85.2	0.374	83	83.0	140	86.4	0.450
	Sellar	Yes	19	19.0	24	14.8	0.374	17	17.0	22	13.6	0.450
	Post-sellar	No	20	20.0	34	21.0	0.848	19	19.0	33	20.4	0.874
	Post-sellar	Yes	80	80.0	128	79.0	0.848	81	81.0	129	79.6	0.874
Sphenoid sinus coronal plane	Pre-Vidian	No	54	54.0	84	51.9	0.735	56	56.0	90	55.6	0.944
	Pre-Vidian	Yes	46	46.0	78	48.1	0.735	44	44.0	72	44.4	0.944
	İntercanal	No	73	73.0	134	82.7	0.061	72	72.0	128	79.0	0.195
	İntercanal	Yes	27	27.0	28	17.3	0.061	28	28.0	34	21.0	0.195
	Post-rotundum	No	73	73.0	106	65.4	0.201	72	72.0	106	65.4	0.268
	Post-rotundum	Yes	27	27.0	56	34.6	0.201	28	28.0	56	34.6	0.268
Vidian canal	Completely within the SS	No	90	90.0	149	92.0	0.583	88	88.0	146	90.1	0.589
	Completely within the SS	Yes	10	10.0	13	8.0	0.583	12	12.0	16	9.9	0.589
	On the floor or partially protruding into the SS	No	54	54.0	92	56.8	0.659	56	56.0	94	58.0	0.748
	On the floor or partially protruding into the SS	Yes	46	46.0	70	43.2	0.659	44	44.0	68	42.0	0.748
	Completely embedded in the SC	No	56	56.0	83	51.2	0.453	56	56.0	83	51.2	0.453
	Completely embedded in the SC	Yes	44	44.0	79	48.8	0.453	44	44.0	79	48.8	0.453
Optic canal	No indentation	No	86	86.0	138	85.2	0.856	84	84.0	139	85.8	0.690
	No indentation	Yes	14	14.0	24	14.8	0.856	16	16.0	23	14.2	0.690
	Indentation to SS wall	No	49	49.0	93	57.4	0.185	52	52.0	91	56.2	0.510
	Indentation to SS wall	Yes	51	51.0	69	42.6	0.185	48	48.0	71	43.8	0.510
	Protrudation to SS wall	No	77	77.0	118	72.8	0.453	77	77.0	118	72.8	0.543
	Protrudation to SS wall	Yes	23	23.0	44	27.2	0.453	23	23.0	44	27.2	0.543
	Laterally to the SS and PEC	No	88	88.0	137	84.6	0.438	88	88.0	140	86.4	0.712
	Laterally to the SS and PEC	Yes	12	12.0	25	15.4	0.438	12	12.0	22	13.6	0.712
Carotid canal	No indentation	No	51	51.0	114	70.4	0.002	51	51.0	113	69.8	0.002
	No indentation	Yes	49	49.0	48	29.6	0.002	49	49.0	49	30.2	0.002
	Indentation to SS wall	No	71	71.0	93	57.4	0.027	71	71.0	94	58.0	0.035
	Indentation to SS wall	Yes	29	29.0	69	42.6	0.027	29	29.0	68	42.0	0.035
	Protrudation to SS wall	No	78	78.0	121	74.7	0.543	78	78.0	121	74.7	0.543
	Protrudation to SS wall	Yes	22	22.0	41	25.3	0.543	22	22.0	41	25.3	0.543

SS sphenoid sinus, SC sphenoid corpus, PEC posterior ethmoid cell

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