J Korean Assoc Oral Maxillofac Surg 2017; 43(2): 134~137
Giant cell tumor of temporomandibular joint masquerading as temporomandibular joint pain dysfunction syndrome: a rare case report
Jo Ee Sam1, Rullyandrianto Pan Nuriman Rachmat2, Cri Saiful Jordan Melano3, Nasser Abdul Wahab1
Departments of 1Neurosurgery and 2Oral and Maxillofacial Surgery, Hospital Pulau Pinang,
3Department of Oral and Maxillofacial Surgery, Hospital Seberang Jaya, Pulau Penang, Malaysia
Jo Ee Sam
Department of Neurosurgery, Hospital Pulau Pinang, Jalan Residensi, 10990 Georgetorn, Pulau Penang, Malaysia
TEL: +60-164990242
FAX: +60-42281737
E-mail: joeesam@gmail.com
Received July 8, 2016; Revised September 17, 2016; Accepted September 21, 2016.; Published online April 30, 2017.
© Korean Association of Oral and Maxillofacial Surgeons. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Giant cell tumor (GCT) of the craniofacial bones has been reported but they are not common. This tumor occurs more often in women than in men and predominantly affects patients around the third to fifth decade of life. GCTs are generally benign but can be locally aggressive as well. We report a case of GCT involving the temporomandibular joint (TMJ), which was initially thought to be temporomandibular disorder (TMD). A 22-year-old female presented with swelling and pain over the right temporal region for 18 months associated with jaw locking and clicking sounds. On examination, her jaw deviated to the right during opening and there was a 2×2 cm swelling over the right temporal region. Despite routine treatment for TMD, the swelling increased in size. Computed tomography and magnetic resonance imaging of the brain and TMJ revealed an erosive tumor of the temporal bone involving the TMJ which was displacing the temporal lobe. Surgical excision was done and the tumor removed completely. Histopathological examination was consistent with a GCT. No clinical or radiological recurrence was detected 10 months post-surgery.
Keywords: Giant cell tumors, Temporomandibular joint, Temporomandibular joint disorders, Temporal bone, Mandible

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