{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T04:24:44Z","timestamp":1777523084023,"version":"3.51.4"},"reference-count":26,"publisher":"SAGE Publications","issue":"10","license":[{"start":{"date-parts":[[2019,6,9]],"date-time":"2019-06-09T00:00:00Z","timestamp":1560038400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"crossref","award":["2016R1A2B1010654"],"award-info":[{"award-number":["2016R1A2B1010654"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["The Cleft Palate Craniofacial Journal"],"published-print":{"date-parts":[[2019,11]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>This study was to investigate ipsilateral hypertrophy of the mastoid process in the patients with congenital muscular torticollis (CMT).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design:<\/jats:title>\n                    <jats:p>Retrospective cross-sectional study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Patients:<\/jats:title>\n                    <jats:p>Children with CMT.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>A total of 212 surgical cases of patients with CMT (age: 50.9 \u00b1 44.3 months) and 212 age- and gender-matched controls (age: 50.4 \u00b1 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.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      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 \u00b1 30.3 cm\n                      <jats:sup>3<\/jats:sup>\n                      vs 21.9 \u00b1 22.8 cm\n                      <jats:sup>3<\/jats:sup>\n                      ; P &lt; .001). In the control group, there was no significant difference between the volume of the right and left mastoid process (21.6 \u00b1 24.6 cm\n                      <jats:sup>3<\/jats:sup>\n                      vs 21.2 \u00b1 23.8 cm\n                      <jats:sup>3<\/jats:sup>\n                      ; P = .472). The intrasubject volume difference in the mastoid process in the CMT group showed a linear increase with the age (adjusted R\n                      <jats:sup>2<\/jats:sup>\n                      = 0.286; P &lt; .001), and the volumetric asymmetry of the mastoid process became more severe over age compared to the control group.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>We showed ipsilateral hypertrophy of the mastoid process in patients with CMT and demonstrated that the volumetric asymmetry increased with age.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/1055665619853966","type":"journal-article","created":{"date-parts":[[2019,6,10]],"date-time":"2019-06-10T01:15:57Z","timestamp":1560129357000},"page":"1295-1301","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Ipsilateral Hypertrophy of the Mastoid Process in Surgical Cases of Congenital Muscular Torticollis"],"prefix":"10.1177","volume":"56","author":[{"given":"Hyun Gi","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Radiology, Eunpyeong St. Mary\u2019s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea"},{"name":"Department of Radiology, Ajou University School of Medicine, Suwon, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8521-6331","authenticated-orcid":false,"given":"Shin-Young","family":"Yim","sequence":"additional","affiliation":[{"name":"Department of Physical 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