PMC4197368_01
Ultrasound showing well-circumscribed midline cystic structure, measuring 8.3 x 7.7 cm with multiple rounded lobulated echogenic structures within.
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Ultrasound was done using 10 MHz linear transducer (Figure 1).
Computed tomography of the neck in coronal (a) sagittal (b) and axial (c) planes showing a well-defined encapsulated cystic mass lesion in the floor of the mouth occupying the submental and submandibular regions and containing rounded fat density structures.
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This showed a well-defined encapsulated cystic mass lesion in the floor of the mouth occupying the submental region containing low attenuation rounded structures of fat density (Figure 2).
Specimen from the midline submental lesion histopathology. Hematoxylin and eosin (a) and magnified view (b) showing fragmented cyst lined by keratinizing multilayered benign squamous epithelium.
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fig3
Histopathology revealed portions of a cyst lined by multilayered epidermal-type benign squamous epithelium (Figures 3).
Focal ulceration (black arrows) in the cyst wall with organizing fibrosis and chronic inflammation in the cyst wall.
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There was focal ulceration with organizing fibrosis and chronic inflammation in the cyst wall (Figure 4).