Computed tomography-derived assessment of respiratory impairment in thoracic scoliosis: Comparison between idiopathic and non-idiopathic etiologies

doi:10.4329/wjr.119975

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World Journal of Radiology

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1949-8470

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World J Radiol. Jun 28, 2026; 18(6): 119975
Published online Jun 28, 2026. doi: 10.4329/wjr.119975

Table 1 Comparison of clinical characteristics, spinal thoracic deformity parameters, and computed tomography-derived respiratory function parameters between idiopathic and non-idiopathic scoliosis

		Total (n = 53)	Idiopathic (n = 25)	Non-idiopathic (n = 28)	P value
Age (year)		15 (11-30)	15 (12-30)	15 (11-26)	> 0.99
Gender (male)		19 (35.8)	2 (10.5)	17 (89.5)	< 0.001
Height (cm)		152 (143, 159)	157 (154, 162)	144 (139, 149)	< 0.001
Cobb angle (°)		65 (46, 84)	47 (38, 65)	82 (59, 99)	< 0.001
AVT (mm)		46 (31, 77)	38 (24, 47)	75 (43, 92)	< 0.001
AVB-R		0.66 (0.35, 0.81)	0.67 (0.51, 0.78)	0.61 (0.22, 1.5)	0.36
RAml (°)		38 (26, 59)	30 (21, 39)	55 (28, 74)	< 0.001
RAsag (°)		20 (12, 38)	14 (11, 22)	36 (17, 45)	< 0.001
TLC%		54 (37, 68)	64 (59, 75)	39 (29, 53)	< 0.001
Lung volume (mL)	Total	2307 (1390, 2982)	2865 (2548, 3421)	1471 (860, 2178)	< 0.001
	Right	1241 (785, 1582)	1560 (1376, 1888)	823 (437, 1145)	< 0.001
	Right upper	421 (257, 529)	496 (428, 603)	262 (168, 381)	< 0.001
	Right middle	192 (147, 274)	243 (192, 311)	155 (104, 210)	< 0.001
	Right lower	597 (318, 799)	778 (682, 1002)	359 (168, 557)	< 0.001
	Left	1121 (589, 1369)	1293 (1142, 1542)	658 (408, 1058)	< 0.001
	Left upper	564 (315, 726)	714 (591, 815)	356 (222, 539)	< 0.001
	Left lower	504 (259, 648)	630 (512, 790)	281 (222, 539)	< 0.001
Tracheal bifurcation	Min diameter (mm)	11.9 (10.2, 13.2)	12.2 (10.9, 13.7)	11.4 (9.5, 13.1)	0.15
	Max diameter (mm)	17.4 (15.2, 19.7)	18.5 (16.9, 19.9)	15.8 (13.7, 18.5)	0.01
	Area (mm²)	178 (139, 211)	190 (160, 213)	153 (118, 190)	0.03
Narrowest tracheal segment	Min diameter (mm)	11.9 (9.5, 12.8)	12.1 (11.8, 13.1)	9.9 (6.3, 12.4)	0.001
	Max diameter (mm)	13.8 (12.5, 15.6)	14.1 (13.4, 15.6)	13.3 (11.7, 15.5)	0.18
	Area (mm²)	136 (93, 164)	140 (128, 166)	107 (64, 161)	0.04
Narrowest left bronchus	Min diameter (mm)	5.5 (4.4, 7.1)	6.3 (5.1, 7.3)	5.3 (4.1, 6.9)	0.08
	Max diameter (mm)	7.5 (5.9, 9.9)	8.6 (6.9, 10.3)	7.2 (5.3, 8.9)	0.054
	Area (mm²)	36 (22, 61)	45 (30, 64)	32 (17, 48)	0.06
Narrowest right bronchus	Min diameter (mm)	8.9 (7.2, 10.5)	9.7 (7.8, 11.0)	7.9 (7.1, 10.4)	0.09
	Max diameter (mm)	11.8 (9.2, 14.4)	13.1 (10.2, 15.3)	10.9 (8.9, 13.4)	0.051
	Area (mm²)	89 (57, 124)	97 (71, 142)	78 (56, 111)	0.04
Right-to-left bronchial length ratio		0.84 (0.78, 0.85)	0.84 (0.80, 0.86)	0.83 (0.77, 0.85)	0.36
Longitudinal analysis cohort (n)		50	24	26
Number of instrumented thoracic vertebrae		9 (4-11)	9 (8, 11)	9 (8, 10)	0.41
Number of instrumented vertebrae		13 (5-16)	12 (11, 13)	14.5 (12, 15)	0.001
Follow-up duration (months)		12 (6-12)	12 (10-12)	12 (6-12)	0.05

Data were shown as n (%) or mean ± SD or median (range). AVT: Apical vertebral translation; AVB-R: Apical vertebral body-rib ratio; RAml: Rotation relative to anterior midline; RAsag: Rotation relative to sagittal plane; TLC%: Predicted total lung capacity percentage.

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Citation: Tsuchiya N, Yogi S, Yogi A, Iida G, Yonemoto K, Shimabukuro T, Nishida K, Nishie A. Computed tomography-derived assessment of respiratory impairment in thoracic scoliosis: Comparison between idiopathic and non-idiopathic etiologies. World J Radiol 2026; 18(6): 119975
URL: https://www.wjgnet.com/1949-8470/full/v18/i6/119975.htm
DOI: https://dx.doi.org/10.4329/wjr.119975

Tsuchiya N, Yogi S, Yogi A, Iida G, Yonemoto K, Shimabukuro T, Nishida K, Nishie A. Computed tomography-derived assessment of respiratory impairment in thoracic scoliosis: Comparison between idiopathic and non-idiopathic etiologies. World J Radiol 2026; 18(6): 119975 [PMID: 42395105 DOI: 10.4329/wjr.119975]

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