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Ipsilateral Hypertrophy of the Mastoid Process in Surgical Cases of Congenital Muscular Torticollis.
관리자
2019-08-09 14:31:18

 2019 Jun 9:1055665619853966. doi: 10.1177/1055665619853966. [Epub ahead of print]

Ipsilateral Hypertrophy of the Mastoid Process in Surgical Cases of Congenital MuscularTorticollis.

Kim HG1,2Yim SY3.

Abstract

OBJECTIVE:

This study was to investigate ipsilateral hypertrophy of the mastoid process in the patients with congenital muscular torticollis(CMT).

DESIGN:

Retrospective cross-sectional study.

PATIENTS:

Children with CMT.

METHODS:

A total of 212 surgical cases of patients with CMT (age: 50.9 ± 44.3 months) and 212 age- and gender-matched controls (age: 50.4 ± 44.2 months) were included. The mastoid process volume was calculated and compared for both groups on the computed tomography axial images. A linear regression analysis was performed between the age and the intrasubject volume difference in the mastoid process.

RESULTS:

The volume of the mastoid process in the CMT side was significantly larger than that of the non-CMT side in the CMT group (32.2 ± 30.3 cm3 vs 21.9 ± 22.8 cm3; P < .001). In the control group, there was no significant difference between the volume of the right and left mastoid process (21.6 ± 24.6 cm3 vs 21.2 ± 23.8 cm3; P = .472). The intrasubject volume difference in the mastoid process in the CMT group showed a linear increase with the age (adjusted R 2 = 0.286; P < .001), and the volumetric asymmetry of the mastoid process became more severe over age compared to the control group.

CONCLUSION:

We showed ipsilateral hypertrophy of the mastoid process in patients with CMT and demonstrated that the volumetric asymmetry increased with age.

KEYWORDS:

complications; facial asymmetry; hypertrophymastoidtorticollis/congenital

PMID: 31179727

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