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Masticator Space Tumor Mimicking Temporomandibular Disorder Presenting Facial Swelling and Trismus: A Case Report
J Oral Med Pain 2019;44:65-68
Published online June 30, 2019;
© 2019 Korean Academy of Orofacial Pain and Oral Medicine

Koo-Hyun Jeong, Jo-Eun Park, Mee-Eun Kim, Hye-Kyoung Kim

Department of Oral Medicine, College of Dentistry, Dankook University, Cheonan, Korea
Correspondence to: Hye-Kyoung Kim Department of Oral Medicine, College of Dentistry, Dankook University, 119 Dandaero, Dongnam-gu, Cheonan 31116, Korea Tel: +82-41-550-1913 Fax: +82-505-434-7951 E-mail:
Received May 7, 2019; Revised May 20, 2019; Accepted May 20, 2019.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Temporomandibular disorders (TMD), involving the masticator system of temporomandibular joint (TMJ) and masticator muscle, can be characterized with the cardinal signs and symptoms of jaw pain, noises and limitation of mandibular range of motion. However, TMD requires differential diagnosis due to its heterogeneous characteristics with various causes despite the similar clinical profiles. Oral cancer involving TMJ and the masticator system, although infrequent, can be one of these causes and should be considered one of the most life-threatening disease mimicking TMDs. This report introduces a case of masticator space tumor originally diagnosed as TMD in a 73-year-old Korean female with previous history of brain tumor. The clinical signs and symptoms closely mimic that of TMD which may have disrupted differential diagnosis. We discuss here key points for suspecting TMDs of secondary origin, namely, that of cancer and the implications it has on dental clinicians.
Keywords : Facial pain; Masticator space; Neoplasms; Temporomandibular joint disorders

December 2019, 44 (4)