PMC3312265_01
16-year-old female with a swelling on the left cheek.
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On clinical examination, the left cheek was grossly deformed with normal overlying skin, and there was no neurological deficit over the affected area and no nasal discharge (Figure 1).
Oral pantomogram showing well-defined radiolucent cyst with canine tooth (arrow).
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The radiographs showed a well-defined, unilocular radiolucency in maxilla with expansion and thinning of all its bony walls with the left upper canine tooth and without any evidence of calcifications (Figure 2).
Intraoperative photograph showing the procedure undertaken for the removal of tumour.
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The enucleation of the cyst was done under local anaesthesia along with the removal of the impacted canine, supernumerary, and first premolar tooth (Figure 3).
Gross examination revealed a cystic lesion showing the attachment of embedded canine tooth.
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Macroscopically, the specimen measured 4.5 x 3.5 x 4.0 cms with a smooth surface and was associated with a well-developed canine crown portion, circumscribed by cyst (Figure 4).
(a) Microscopic photograph showing tumor nodule composed of spindle-shaped or cuboidal epithelial cells forming rosette-like structures (H&E x40). (b) Microscopic photograph showing duct-like structures of odontogenic epithelium lined by a single row of cuboidal or low columnar epithelial cells (H&E x10).
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Microscopically, The lesional tissue contained variable-sized solid nodules of columnar cells of odontogenic epithelium forming nests and rosette-like structures (Figure 5(a)). The duct-like spaces were also seen and were lined by a single row of columnar epithelial cells, with the nuclei polarized away from luminal surface (Figure 5(b)).