PMC3335520_01
Partial obliteration of buccal vestibule and blanched palatal mucosa.
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fig1
Palatal expansion was minimal with mild blanching (Figure 1).
Ill-defined hazy radiolucency with multiple calcified specks and resorption of roots of 17, 18.
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fig2
Intraoral periapical radiograph revealed diffuse hazy radiolucency extending from right upper second premolar to third molar causing resorption of the molar roots (Figure 2).
CT-coronal section.
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fig3
CT sections showed an ill-defined expansile mass lesion completely occluding the right maxillary sinus extending inferiorly upto the right maxillary alveolus (Figure 3).
Excised lesion after hemimaxillectomy.
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fig4
Incisional biopsy followed by excision of the lesion with hemimaxillectomy was carried out (Figure 4). 
Sections show fibrocellular connective tissue with interspersed spherical calcifications. Most of the areas are highly fibrous with stellate-shaped fibroblasts and plump fibroblasts surrounding the ossifications (H and E, 10x magnification).
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fig5
Trabecular ossifications showed osteoblastic rimming, osteoclasts at few areas, and reversal lines at few sites (Figure 5) Von Kossa's staining revealed abnormal deposits of osteoid (pink) and calcium (black) (Figure 6).
Von Kossa's staining revealed abnormal deposits of calcium and osteoid (10x magnification).
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fig6
Trabecular ossifications showed osteoblastic rimming, osteoclasts at few areas, and reversal lines at few sites (Figure 5) Von Kossa's staining revealed abnormal deposits of osteoid (pink) and calcium (black) (Figure 6).