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Case Reports
. 2013 Sep 6:2013:bcr2013200268.
doi: 10.1136/bcr-2013-200268.

Osteoma of temporomandibular joint: a rarity

Affiliations
Case Reports

Osteoma of temporomandibular joint: a rarity

Neeta Misra et al. BMJ Case Rep. .

Abstract

Osteoma is a benign tumour consisting of mature bone tissue. It is an uncommon lesion that occurs in the bones of the craniofacial complex. Only a few cases involving the temporomandibular joint have been reported. An osteoma of the left temporomandibular joint causing limited mouth opening in a 22-year-old man with CT findings revealing the unusual possibility in differential diagnosis of trismus.

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Figures

Figure 1
Figure 1
Extra oral picture of patient.
Figure 2
Figure 2
Restricted mouth opening.
Figure 3
Figure 3
Orthopantomograph showing large radiopacity in the left temporomandibular joint region.
Figure 4
Figure 4
(A) Axial CT slices showing hyperdense mass of size 2.84 cm mediolaterally in left condylar region involving the sphenoid and temporal bones and (B) multiple hypodense areas, within the mass.
Figure 5
Figure 5
(A) Frontal slices showing hyperdense enlarged temporomandibular joint components with linear hypodense area of variable thickness and (B) hypodense area of variable thickness joint space.
Figure 6
Figure 6
(A) Sagittal slices showing obliterated joint space (B) change in the structure of the temporomandibular joint components and (C) increased size of the left coronoid process.
Figure 7
Figure 7
H&E-stained section showing mature lamellated compact bone.

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