先天性筋性コルチコラーゼの手術症例における乳様突起の同側肥大

Ipsilateral Hypertrophy of the Mastoid Process in Surgical Cases of Congenital Muscular Torticollis.

• Hyun Gi Kim
• Shin-Young Yim

抄録

目的:

この研究は、先天性筋性コルチコリス（CMT）患者における乳様突起の同側肥大を調べることを目的としています。

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

デザイン:

レトロスペクティブ横断的研究。

DESIGN: Retrospective cross-sectional study.

患者:

CMTを持つ子供たち。

PATIENTS: Children with CMT.

方法:

CMT患者の手術症例212例（年齢：50.9±44.3ヵ月）と、年齢と性別をマッチさせた対照群212例（年齢：50.4±44.2ヵ月）を対象とした。乳様突起体積を計算し、両群のCT軸画像上で比較した。乳様突起の年齢と被験者内の体積差の間で線形回帰分析を行った。

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.

結果:

CMT側の乳様突起の体積は、CMT群では非CMT群に比べて有意に大きかった（32.2±30.3cm vs 21.9±22.8cm；＜0.001）。対照群では、左右の乳様突起の体積に有意差はなかった（21.6±24.6cm vs 21.2±23.8cm; = .472）。CMT群の乳様突起の被験者内容積差は、年齢とともに直線的な増加を示し（調整値=0.286;< 0.001）、乳様突起の容積非対称性は対照群に比べて加齢とともにより深刻になった。

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 cm vs 21.9 ± 22.8 cm; < .001). In the control group, there was no significant difference between the volume of the right and left mastoid process (21.6 ± 24.6 cm vs 21.2 ± 23.8 cm; = .472). The intrasubject volume difference in the mastoid process in the CMT group showed a linear increase with the age (adjusted = 0.286; < .001), and the volumetric asymmetry of the mastoid process became more severe over age compared to the control group.

結論:

我々は、CMT患者の乳様突起の同側肥大を示し、加齢とともに体積的非対称性が増加することを示した。

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