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. 2014 Sep 4;14:653. doi: 10.1186/1471-2407-14-653

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© Luo et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Survival analyses for MSI Pattern A. (A) Overall survival, (B) local relapse-free survival, (C) metastasis-free survival and (D) disease-free survival for different groups of MSI in pattern A. MSI, masticator space involvement. Classification pattern A: grade 0 converted to PA0, grade 1 converted to PA1, grade 2 converted to PA2, grade 3 converted to PA3. Grades of masticator space involvement. Grade 0: without MSI; Grade 1: with medial pterygoid muscle involvement but without lateral pterygoid muscle involvement or infratemporal fossa involvement; Grade 2: with medial and/or lateral pterygoid muscle but without infratemporal fossa involvement; Grade 3: with infratemporal fossa involvement.