Sphenopalatine ganglion volumetry in episodic cluster headache: from symptom laterality to cranial autonomic symptoms

Table 2 Comparisons of SPG volume and diameters (CH patients vs. non-headache healthy controls and pain side vs. non-pain side)

	SPG volume and diameters	CH (n = 80)	Controls (n = 40)	p value (CH vs. controls)^a	CH patients		p value (pain vs. non-pain side)^b
	SPG volume and diameters	Mean of bilateral SPG	Mean of bilateral SPG	p value (CH vs. controls)^a	Pain side (n = 80)	Non-pain side (n = 80)	p value (pain vs. non-pain side)^b
Volumetry	Volume, mean (SD), µL	35.89 (12.94)	26.13 (8.62)	< 0.001#	38.87 (14.71)	32.91 (12.70)	< 0.001#
Diameter measurements	Depth, mean (SD), mm	2.09 (0.4)	2.09 (0.50)	0.955	2.14 (0.49)	2.04 (0.47)	0.118
	Width, mean (SD), mm	4.11 (0.66)	3.68 (0.49)	< 0.001#	4.24 (0.81)	3.99 (0.86)	0.029#
	Height, mean (SD), mm	4.54 (0.89)	4.13 (0.92)	0.020#	4.48 (1.13)	4.61 (1.0)	0.355

^aDifferences in volume and diameters between CH and non-headache healthy controls were analyzed by independent samples t-test
^bDifferences in volume and diameters between the pain side and non-pain side were analyzed by paired t-test
^#p < 0.05 was considered statistically significant

ISSN: 1129-2377