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Soft-tissue osteoma in the pterygomandibular space: report of a rare case

G Li*,1, YT Wu1, Y Chen2, TJ Li2, Y Gao2, J Zhang1, ZY Zhang1 and XC Ma1

1Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China; 2Department of Pathology, Peking University School and Hospital of Stomatology, Beijing, China


Figure 1
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  		Figure 1 Picture of the patient with (a) mouth closed and (b) mouth open. No facial asymmetry, swelling or difficulty in opening the mouth were observed

 

Figure 2
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  		Figure 2 Two dense radiopaque masses with well-circumscribed margins were shown in the left side of the jaws. One was anterior to the ramus of mandible and the other was superior to the sigmoid notch and the coronoid process (arrows)

 

Figure 3
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  		Figure 3 CT examination showed that (a) the two radiopaque masses had no attachment to the surrounding bones and (b) the density of the two masses was not homogeneous

 

Figure 4
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  		Figure 4 Radiograph of the specimens, showing the well-defined borders and many small radiopaque masses within the specimens

 

Figure 5
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  		Figure 5 A three-dimensional image of the osteomas

 

Figure 6
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  		Figure 6 Microscopically, the round-shaped mature bones with prominent cancellous component and marrow function were separated by fibrous connective tissues (original magnification x40)

 




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