PMC3591044_01
Clinical photograph showing intraoral soft tissue swelling in the left retromolar region bluish in colour with diffuse margins and stretched mucous membrane.
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F1
Clinical examination revealed a 2 cm smooth, spherical swelling at left retromolar region, which was normothermic, non-tender, soft in consistency, fluctuant, fluid-filled, bluish in color with stretched mucous membrane [Figure 1].
Computed Tomography (CT) scan showing a cystic lesion present medial to the angle of the mandible.
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F2
The imaging gave a conclusion remark of possibilities such as mucocele, lymphangioma, or necrotic lymph node [Figures 2 and 3].
Contrast CT scan showing cystic lesion medial to the angle of the mandible measuring 1.5 cm x 2.6 cm.
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F3
The imaging gave a conclusion remark of possibilities such as mucocele, lymphangioma, or necrotic lymph node [Figures 2 and 3].
Gross examination showing a cystic lesion, roughly oval in shape, creamish brown in color, and nodular surface.
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F4
Cystic sac was excised [Figure 4], with care taken to prevent any damage to cyst wall.
Photomicrograph showing malignant epidermoid cells, intermediate cells and mucous cells forming microcystic areas. Chronic inflammatory cell infiltrate is seen (H and E, 10x).
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F5
The unique feature histopathologically is that the tumor showed all types of cell differentiation: epidermoid, squamous, intermediate, mucus, clear, and columnar cells forming variety of epithelial patterns [Figures 5 and 6].
Photomicrograph showing syncytial arrangement of intermediate cells, and presence of columnar, mucous, and epidermoid cells (H and E, 10x).
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F6
The unique feature histopathologically is that the tumor showed all types of cell differentiation: epidermoid, squamous, intermediate, mucus, clear, and columnar cells forming variety of epithelial patterns [Figures 5 and 6].