PMC3591041_01
10-month-old infant showing a diffuse swelling in the left mandibular posterior region
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F1
An extraoral examination showed a diffuse swelling, firm in consistency, approximately 3 x 3 cm, extending from the angle of the mandible to the middle of the ramus and superoinferiorly from 2 cm below the malar prominence to the inferior border of the mandible [Figure 1].
Axial CT demonstrating a well-defined lesion with the expansion of buccal and lingual cortical plates
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F2
The two-dimensional (2D) CT scans [Figures 2 and 3] showed a lesion approximately 2.7 x 2.1 cm in the posterior mandible on the left side with broad expansion of the buccal and lingual cortices and well-defined borders.
Coronal CT showing the expansion of buccal and lingual cortical plates and area of perforation of the buccal cortex
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F3
The two-dimensional (2D) CT scans [Figures 2 and 3] showed a lesion approximately 2.7 x 2.1 cm in the posterior mandible on the left side with broad expansion of the buccal and lingual cortices and well-defined borders.
Intraoperative view after the excision of the mass and peripheral osectomy of the posterior mandible
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F4
Thorough curretage of the bony crypt was carried out; gelfoam was used to fill the defect [Figure 4].
Photomicrograph of the SMA stain showing irregularly arranged fascicles of spindle-shaped cells with blunt-ended nuclei (40x)
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F5
The specimen tested positive for smooth muscle actin and vimentin [Figures 5 and 6].
Photomicrograph of the vimentin stain of the lesion showing strong immunoreactions of the myofibroblasts (40x)
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F6
The specimen tested positive for smooth muscle actin and vimentin [Figures 5 and 6].