PMC3347716_01
Lesion extension intraorally.
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fig1
Intraoral examination revealed bicortical expansion of the left maxillary alveolar ridge with the swelling extending from left first premolar to the first molar which was roughly elliptical in outline and nontender (Figure 1).
Orthopantomogram showing the lesion.
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fig2
The periphery of the lesion was surrounded by a well-defined radiolucent rim (Figure 2).
Radiograph showing the extent of lesion.
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fig3
Superiorly, the lesion was invading into the maxillary sinus and the inferior extent was almost till the alveolar ridge (Figure 3).
Intra-operative view of the tumor.
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fig4
Under strict aseptic precautions, complete excision of the tumor was performed through a buccal vestibular incision extending from canine to the second molar (Figure 4).
Excised specimen.
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fig5
Intraoperatively, the tumor was not very vascular and as it was well circumscribed which facilitated in toto excision (Figure 5).
Histopathological picture of the lesion.
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fig6
The specimen was sent for histopathological examination which confirmed the diagnosis of benign osteoblastoma.  Figure 6 shows vascularized fibrous connective tissue with bony trabeculae lined by numerous osteoblasts and scattered osteoclasts.