PMC5376400_01
Intraoral finding. A submucous mass at the right buccal mucosa (arrow).
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fig1
The mass was 20 mm in diameter, elastically firm, partly mobile without pain or tenderness (Figure 1).
MR image of the lesion (arrow).
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fig2
MR image did not delineate the lesion clearly (Figure 2).
Intraoperative finding.
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fig3
The mass was easily removed, including a small amount of the healthy surrounding tissue (Figure 3).
Excised material. (a) Whole material. (b) Cut surface.
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fig4
The excised lesion was 14 x 11 x 9 mm in size (Figure 4(a)) and solid and yellowish in cut surface (Figure 4(b)).
Histological findings (H&E staining). (a) Low-powered view of the lesion. (b, c) High-powered view of narrow, curved, eosinophilic structures.
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fig5
Histologically, the lesion consisted of granulomatous tissue with multinuclear giant cells and infiltration of lymphocytes and leukocytes (Figure 5(a)). In the granulomatous tissue, a few narrow, curved, eosinophilic structures were observed (Figures 5(b) and 5(c)); therefore, the lesion was diagnosed as a foreign body granuloma.