PMC4643351_01
Pre-operative MRI revealed a well-demarcated cyst close to the hyoid bone. High signal intensity was found at the partial center in T1-weighted image and entirely at T2-weighted image. This was filmed using short TI inversion recovery imaging.
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Magnetic resonance imaging (MRI) revealed a well-demarcated cyst located close to the hyoid bone, with high signal intensity present at the partial center in the T1-weighted image and entirely in the T2-weighted image (Fig. 1).
Cystic structure or thyroid gland follicle, mucus component were not histopathologically detected, and inflammatory cells were mostly occupied; the latter resection sample is more scarred than the former. (Hematoxylin and eosin staining, 1.25x original magnification).
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Histopathological examination did not detect any cystic structure, thyroid gland follicle or mucus component with fibrous scar accounting for the majority of the excised tissue (Fig. 2).
Extraorally, approximately 10 mm suture was dehiscent at the submental region, and gentle pressure on the surrounding tissue produced suppurative drainage from the central punctum.
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Extraorally, approximately 10 mm suture was dehiscent at the submental region, and a gentle pressure on the surrounding tissue produced suppurative drainage from the central punctum (Fig. 3).
Periapical radiograph examination indicated 6 mm x 7 mm radiolucency at the apex of the left mandibular second molar.
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The periapical radiographic examination indicated diffused radiolucency measuring 6 mm x 7 mm at the apex of the left mandibular second molar (Fig. 4).
Fistulography confirmed that the cutaneous lesion communicated with the periapex of the left mandibular molars.
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Computed tomography (CT) and fistulography indicated that the cutaneous lesion was linked to the periapex of the left mandibular second molar (Fig. 5).
The use of a sonde revealed that the tract was leading from the submental lesion to the apex of the left mandibular second molar.
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It was intraoperatively confirmed that the tract led from the submental lesion to the apex of the left mandibular second molar through a sonde (Fig. 6).